1
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Chen X, Kamat PV, Janáky C, Samu GF. Charge Transfer Kinetics in Halide Perovskites: On the Constraints of Time-Resolved Spectroscopy Measurements. ACS ENERGY LETTERS 2024; 9:3187-3203. [PMID: 38911533 PMCID: PMC11190987 DOI: 10.1021/acsenergylett.4c00736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 05/16/2024] [Accepted: 05/22/2024] [Indexed: 06/25/2024]
Abstract
Understanding photophysical processes in lead halide perovskites is an important aspect of optimizing the performance of optoelectronic devices. The determination of exact charge carrier extraction rate constants remains elusive, as there is a large and persistent discrepancy in the reported absolute values. In this review, we concentrate on experimental procedures adopted in the literature to obtain kinetic estimates of charge transfer processes and limitations imposed by the spectroscopy technique employed. Time-resolved techniques (e.g., transient absorption-reflection and time-resolved photoluminescence spectroscopy) are commonly employed to probe charge transfer at perovskite/transport layer interfaces. The variation in sample preparation and measurement conditions can produce a wide dispersion of the measured kinetic parameters. The selected time window and the kinetic fitting model employed introduce additional uncertainty. We discuss here evaluation strategies that rely on multiexponential fitting protocols (regular or stretched) and show how the dispersion in the reported values for carrier transfer rate constants can be resolved.
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Affiliation(s)
- Xiangtian Chen
- Department
of Physical Chemistry and Materials Science, Interdisciplinary Excellence
Centre, University of Szeged, Aradi Square 1, Szeged H-6720, Hungary
| | - Prashant V. Kamat
- Department
of Chemistry and Biochemistry, University
of Notre Dame, Notre
Dame, Indiana 46556, United States
| | - Csaba Janáky
- Department
of Physical Chemistry and Materials Science, Interdisciplinary Excellence
Centre, University of Szeged, Aradi Square 1, Szeged H-6720, Hungary
- ELI-ALPS,
ELI-HU Non-Profit Ltd., Wolfgang Sandner street 3., Szeged H-6728, Hungary
| | - Gergely Ferenc Samu
- ELI-ALPS,
ELI-HU Non-Profit Ltd., Wolfgang Sandner street 3., Szeged H-6728, Hungary
- Department
of Molecular and Analytical Chemistry, University
of Szeged, Dóm
Square 7-8. Szeged H-6721, Hungary
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2
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Wang Y, Liang P, Men Y, Jiang M, Cheng L, Li J, Jia T, Sun Z, Feng D. Light-induced photoluminescence enhancement in chiral CdSe quantum dot films. J Chem Phys 2024; 160:161102. [PMID: 38651809 DOI: 10.1063/5.0201365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 04/07/2024] [Indexed: 04/25/2024] Open
Abstract
Chiral quantum dots (QDs) are promising materials applied in many areas, such as chiral molecular recognition and spin selective filter for charge transport, and can be prepared by facile ligand exchange approaches. However, ligand exchange leads to an increase in surface defects and reduces the efficiencies of radiative recombination and charge transport, which restricts further applications. Here, we investigate the light-induced photoluminescence (PL) enhancement in chiral L- and D-cysteine CdSe QD thin films, providing a strategy to increase the PL. The PL intensity of chiral CdSe QD films can be significantly enhanced over 100 times by continuous UV laser irradiation, indicating a strong passivation of surface defects upon laser irradiation. From the comparative measurements of the PL intensity evolutions in vacuum, dry oxygen, air, and humid nitrogen atmospheres, we conclude that the mechanism of PL enhancement is photo-induced surface passivation with the assistance of water molecules.
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Affiliation(s)
- Yang Wang
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China
| | - Pan Liang
- College of Arts and Sciences, Shanghai Dianji University, Shanghai 201306, China
| | - Yumeng Men
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China
| | - Meizhen Jiang
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China
| | - Lin Cheng
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China
| | - Jinlei Li
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China
| | - Tianqing Jia
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China
| | - Zhenrong Sun
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China
| | - Donghai Feng
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, China
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3
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Shellaiah M, Sun KW, Thirumalaivasan N, Bhushan M, Murugan A. Sensing Utilities of Cesium Lead Halide Perovskites and Composites: A Comprehensive Review. SENSORS (BASEL, SWITZERLAND) 2024; 24:2504. [PMID: 38676122 PMCID: PMC11054776 DOI: 10.3390/s24082504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 04/10/2024] [Accepted: 04/12/2024] [Indexed: 04/28/2024]
Abstract
Recently, the utilization of metal halide perovskites in sensing and their application in environmental studies have reached a new height. Among the different metal halide perovskites, cesium lead halide perovskites (CsPbX3; X = Cl, Br, and I) and composites have attracted great interest in sensing applications owing to their exceptional optoelectronic properties. Most CsPbX3 nanostructures and composites possess great structural stability, luminescence, and electrical properties for developing distinct optical and photonic devices. When exposed to light, heat, and water, CsPbX3 and composites can display stable sensing utilities. Many CsPbX3 and composites have been reported as probes in the detection of diverse analytes, such as metal ions, anions, important chemical species, humidity, temperature, radiation photodetection, and so forth. So far, the sensing studies of metal halide perovskites covering all metallic and organic-inorganic perovskites have already been reviewed in many studies. Nevertheless, a detailed review of the sensing utilities of CsPbX3 and composites could be helpful for researchers who are looking for innovative designs using these nanomaterials. Herein, we deliver a thorough review of the sensing utilities of CsPbX3 and composites, in the quantitation of metal ions, anions, chemicals, explosives, bioanalytes, pesticides, fungicides, cellular imaging, volatile organic compounds (VOCs), toxic gases, humidity, temperature, radiation, and photodetection. Furthermore, this review also covers the synthetic pathways, design requirements, advantages, limitations, and future directions for this material.
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Affiliation(s)
- Muthaiah Shellaiah
- Department of Research and Analytics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai 600077, India; (M.S.); (M.B.)
| | - Kien Wen Sun
- Department of Applied Chemistry, National Yang-Ming Chiao Tung University, Hsinchu 300, Taiwan
| | - Natesan Thirumalaivasan
- Department of Periodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai 600077, Tamil Nadu, India;
| | - Mayank Bhushan
- Department of Research and Analytics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai 600077, India; (M.S.); (M.B.)
| | - Arumugam Murugan
- Department of Chemistry, North Eastern Regional Institute of Science & Technology, Nirjuli, Itanagar 791109, India;
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4
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Il Jake Choi J, Ono LK, Cho H, Kim KJ, Kang HB, Qi Y, Park JY. Pathways of Water-Induced Lead-Halide Perovskite Surface Degradation: Insights from In Situ Atomic-Scale Analysis. ACS NANO 2023; 17:25679-25688. [PMID: 38054480 DOI: 10.1021/acsnano.3c10611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
While organic-inorganic hybrid perovskites are emerging as promising materials for next-generation photovoltaic applications, the origins and pathways of perovskite instability remain speculative. In particular, the degradation of perovskite surfaces by ambient water is a crucial subject for determining the long-term viability of perovskite-based solar cells. Here, we conducted surface characterization and atomic-scale analysis of the reaction mechanisms for methylammonium lead bromide (MA(CH3NH3)PbBr3) single crystals using ambient-pressure atomic force microscopy (AP-AFM) and near-ambient-pressure X-ray photoelectron spectroscopy (NAP-XPS) in environments ranging from ultrahigh vacuum to 0.01 mbar of water vapor. MAPbBr3 single crystals, grown by a solution process, were mechanically cleaved under UHV conditions to obtain an atomically clean surface. Consecutive topography and friction force measurements in low-pressure water (pwater ≈ 10-5 mbar) revealed the formation of degraded patches, one atomic layer deep, gradually increasing their coverage until the surface was entirely covered at a water exposure of 4.7 × 104 langmuir (L). At the perimeters of these degraded patches, a higher friction coefficient was observed, along with an interstitial step height, which we attribute to a structure equivalent to that of the MA-Br terminated surface. Combined with NAP-XPS analysis, our results demonstrate that water vapor induces the dissociation of surface methylammonium ligands, eventually resulting in the depletion of the surface MA and the full coverage of hydrocarbon species after exposure to 0.01 mbar of water vapor.
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Affiliation(s)
- Joong Il Jake Choi
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141, Republic of Korea
| | - Luis K Ono
- Energy Materials and Surface Sciences Unit (EMSSU), Okinawa Institute of Science and Technology Graduate University (OIST), 1919-1 Tancha, Onna-son, Kunigami-gun, Okinawa 904-0495, Japan
| | - Hunyoung Cho
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141, Republic of Korea
| | - Ki-Jeong Kim
- Beamline Research Division, Pohang Accelerator Laboratory (PAL), Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Hyung-Been Kang
- Engineering Section, Okinawa Institute of Science and Technology Graduate University (OIST) 1919-1 Tancha, Onna-son, Kunigami-gun, Okinawa 904-0495, Japan
| | - Yabing Qi
- Energy Materials and Surface Sciences Unit (EMSSU), Okinawa Institute of Science and Technology Graduate University (OIST), 1919-1 Tancha, Onna-son, Kunigami-gun, Okinawa 904-0495, Japan
| | - Jeong Young Park
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141, Republic of Korea
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5
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Romero-Pérez C, Delgado NF, Herrera-Collado M, Calvo ME, Míguez H. Ultrapure Green High Photoluminescence Quantum Yield from FAPbBr 3 Nanocrystals Embedded in Transparent Porous Films. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2023; 35:5541-5549. [PMID: 37528839 PMCID: PMC10389805 DOI: 10.1021/acs.chemmater.3c00934] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 06/19/2023] [Indexed: 08/03/2023]
Abstract
Achieving highly transparent and emissive films based on perovskite quantum dots (PQDs) is a challenging task since their photoluminescence quantum yield (PLQY) typically drops abruptly when they are used as building blocks to make a solid. In this work, we obtain highly transparent films containing FAPbBr3 quantum dots that display a narrow green emission (λ = 530 nm, full width at half-maximum (FWHM) = 23 nm) with a PLQY as high as 86%. The method employed makes use of porous matrices that act as arrays of nanoreactors to synthesize the targeted quantum dots within their void space, providing both a means to keep them dispersed and a protective environment. Further infiltration with poly(methyl methacrylate) (PMMA) increases the mechanical and chemical stability of the ensemble and serves to passivate surface defects, boosting the emission of the embedded PQD and significantly reducing the width of the emission peak, which fulfills the requirements established by the Commission Internationale de l'Éclairage (CIE) to be considered an ultrapure green emitter. The versatility of this approach is demonstrated by fabricating a color-converting layer that can be easily transferred onto a light-emitting device surface to modify the spectral properties of the outgoing radiation.
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Affiliation(s)
- Carlos Romero-Pérez
- Instituto
de Ciencias de Materiales de Sevilla (Consejo Superior de Investigaciones
Científicas-Universidad de Sevilla), C/Américo Vespucio, 49, Sevilla 41092, Spain
| | - Natalia Fernández Delgado
- Department
of Material Science, Metallurgical Engineering and Inorganic Chemistry
IMEYMAT, Facultad de Ciencias (Universidad
de Cádiz), Campus Río San Pedro, s/n, Puerto Real, Cádiz 11510, Spain
| | - Miriam Herrera-Collado
- Department
of Material Science, Metallurgical Engineering and Inorganic Chemistry
IMEYMAT, Facultad de Ciencias (Universidad
de Cádiz), Campus Río San Pedro, s/n, Puerto Real, Cádiz 11510, Spain
| | - Mauricio E. Calvo
- Instituto
de Ciencias de Materiales de Sevilla (Consejo Superior de Investigaciones
Científicas-Universidad de Sevilla), C/Américo Vespucio, 49, Sevilla 41092, Spain
| | - Hernán Míguez
- Instituto
de Ciencias de Materiales de Sevilla (Consejo Superior de Investigaciones
Científicas-Universidad de Sevilla), C/Américo Vespucio, 49, Sevilla 41092, Spain
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6
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Chin XY, Turkay D, Steele JA, Tabean S, Eswara S, Mensi M, Fiala P, Wolff CM, Paracchino A, Artuk K, Jacobs D, Guesnay Q, Sahli F, Andreatta G, Boccard M, Jeangros Q, Ballif C. Interface passivation for 31.25%-efficient perovskite/silicon tandem solar cells. Science 2023; 381:59-63. [PMID: 37410835 DOI: 10.1126/science.adg0091] [Citation(s) in RCA: 48] [Impact Index Per Article: 48.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Accepted: 05/05/2023] [Indexed: 07/08/2023]
Abstract
Silicon solar cells are approaching their theoretical efficiency limit of 29%. This limitation can be exceeded with advanced device architectures, where two or more solar cells are stacked to improve the harvesting of solar energy. In this work, we devise a tandem device with a perovskite layer conformally coated on a silicon bottom cell featuring micrometric pyramids-the industry standard-to improve its photocurrent. Using an additive in the processing sequence, we regulate the perovskite crystallization process and alleviate recombination losses occurring at the perovskite top surface interfacing the electron-selective contact [buckminsterfullerene (C60)]. We demonstrate a device with an active area of 1.17 square centimeters, reaching a certified power conversion efficiency of 31.25%.
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Affiliation(s)
- Xin Yu Chin
- Photovoltaics and Thin-Film Electronics Laboratory (PV-Lab), Institute of Microengineering (IMT), Ecole Polytechnique Fédérale de Lausanne (EPFL), Neuchâtel, Switzerland
- Centre Suisse d'Électronique et de Microtechnique (CSEM), Neuchâtel, Switzerland
| | - Deniz Turkay
- Photovoltaics and Thin-Film Electronics Laboratory (PV-Lab), Institute of Microengineering (IMT), Ecole Polytechnique Fédérale de Lausanne (EPFL), Neuchâtel, Switzerland
| | - Julian A Steele
- cMACS, Department of Microbial and Molecular Systems, KU Leuven, 3001 Leuven, Belgium
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
- School of Mathematics and Physics, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Saba Tabean
- Advanced Instrumentation for Nano-Analytics (AINA), Luxembourg Institute of Science and Technology (LIST), Materials Research and Technology Department, 41, Rue du Brill, L-4422 Belvaux, Luxembourg
- University of Luxembourg, 2 Avenue de l'Université, L-4365 Esch-sur-Alzette, Luxembourg
| | - Santhana Eswara
- Advanced Instrumentation for Nano-Analytics (AINA), Luxembourg Institute of Science and Technology (LIST), Materials Research and Technology Department, 41, Rue du Brill, L-4422 Belvaux, Luxembourg
| | - Mounir Mensi
- Institute of Chemical Sciences and Engineering (ISIC), École Polytechnique Fédérale de Lausanne, Sion, Switzerland
| | - Peter Fiala
- Photovoltaics and Thin-Film Electronics Laboratory (PV-Lab), Institute of Microengineering (IMT), Ecole Polytechnique Fédérale de Lausanne (EPFL), Neuchâtel, Switzerland
| | - Christian M Wolff
- Photovoltaics and Thin-Film Electronics Laboratory (PV-Lab), Institute of Microengineering (IMT), Ecole Polytechnique Fédérale de Lausanne (EPFL), Neuchâtel, Switzerland
| | - Adriana Paracchino
- Centre Suisse d'Électronique et de Microtechnique (CSEM), Neuchâtel, Switzerland
| | - Kerem Artuk
- Photovoltaics and Thin-Film Electronics Laboratory (PV-Lab), Institute of Microengineering (IMT), Ecole Polytechnique Fédérale de Lausanne (EPFL), Neuchâtel, Switzerland
| | - Daniel Jacobs
- Photovoltaics and Thin-Film Electronics Laboratory (PV-Lab), Institute of Microengineering (IMT), Ecole Polytechnique Fédérale de Lausanne (EPFL), Neuchâtel, Switzerland
| | - Quentin Guesnay
- Photovoltaics and Thin-Film Electronics Laboratory (PV-Lab), Institute of Microengineering (IMT), Ecole Polytechnique Fédérale de Lausanne (EPFL), Neuchâtel, Switzerland
| | - Florent Sahli
- Centre Suisse d'Électronique et de Microtechnique (CSEM), Neuchâtel, Switzerland
| | - Gaëlle Andreatta
- Centre Suisse d'Électronique et de Microtechnique (CSEM), Neuchâtel, Switzerland
| | - Mathieu Boccard
- Photovoltaics and Thin-Film Electronics Laboratory (PV-Lab), Institute of Microengineering (IMT), Ecole Polytechnique Fédérale de Lausanne (EPFL), Neuchâtel, Switzerland
| | - Quentin Jeangros
- Photovoltaics and Thin-Film Electronics Laboratory (PV-Lab), Institute of Microengineering (IMT), Ecole Polytechnique Fédérale de Lausanne (EPFL), Neuchâtel, Switzerland
- Centre Suisse d'Électronique et de Microtechnique (CSEM), Neuchâtel, Switzerland
| | - Christophe Ballif
- Photovoltaics and Thin-Film Electronics Laboratory (PV-Lab), Institute of Microengineering (IMT), Ecole Polytechnique Fédérale de Lausanne (EPFL), Neuchâtel, Switzerland
- Centre Suisse d'Électronique et de Microtechnique (CSEM), Neuchâtel, Switzerland
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7
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Yang W, Li M, Xie M, Tian Y. Simultaneous Photoluminescence and Photothermal Investigation of Individual CH 3NH 3PbBr 3 Microcrystals. J Phys Chem Lett 2023; 14:3506-3511. [PMID: 37014281 DOI: 10.1021/acs.jpclett.3c00491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
The photoluminescence (PL) of CH3NH3PbBr3 (MAPbBr3), from thin films to nanoparticles, has been widely studied, providing information about charge carrier dynamics. However, the other energy dissipative channel, nonradiative relaxation, has not been thoroughly investigated due to a lack of proper technology. In this work, we simultaneously investigated the PL and photothermal (PT) properties of single MAPbBr3 microcrystals (MCs) by a home-built PL and PT microscope. In addition to the direct observation of the heterogeneity of the PL and PT images and kinetics of different MCs, we demonstrated the variation in the absorption of single MAPbBr3 MCs, which was believed to be constant. We also proved that more absorbed energy dissipated from the nonradiative channel at higher heating power. These results show that PL and PT microscopy is an effective and convenient method to investigate the charge carrier behaviors of optoelectronic materials at the single particle level for a deep understanding of their photophysical processes.
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Affiliation(s)
- Weiqing Yang
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Meilian Li
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Mingyi Xie
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Yuxi Tian
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
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8
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Szostak R, de Souza Gonçalves A, de Freitas JN, Marchezi PE, de Araújo FL, Tolentino HCN, Toney MF, das Chagas Marques F, Nogueira AF. In Situ and Operando Characterizations of Metal Halide Perovskite and Solar Cells: Insights from Lab-Sized Devices to Upscaling Processes. Chem Rev 2023; 123:3160-3236. [PMID: 36877871 DOI: 10.1021/acs.chemrev.2c00382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
The performance and stability of metal halide perovskite solar cells strongly depend on precursor materials and deposition methods adopted during the perovskite layer preparation. There are often a number of different formation pathways available when preparing perovskite films. Since the precise pathway and intermediary mechanisms affect the resulting properties of the cells, in situ studies have been conducted to unravel the mechanisms involved in the formation and evolution of perovskite phases. These studies contributed to the development of procedures to improve the structural, morphological, and optoelectronic properties of the films and to move beyond spin-coating, with the use of scalable techniques. To explore the performance and degradation of devices, operando studies have been conducted on solar cells subjected to normal operating conditions, or stressed with humidity, high temperatures, and light radiation. This review presents an update of studies conducted in situ using a wide range of structural, imaging, and spectroscopic techniques, involving the formation/degradation of halide perovskites. Operando studies are also addressed, emphasizing the latest degradation results for perovskite solar cells. These works demonstrate the importance of in situ and operando studies to achieve the level of stability required for scale-up and consequent commercial deployment of these cells.
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Affiliation(s)
- Rodrigo Szostak
- Laboratório de Nanotecnologia e Energia Solar (LNES), University of Campinas (UNICAMP), 13083-970, Campinas, SP, Brazil
- Brazilian Synchrotron Light Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), 13083-100 Campinas, SP, Brazil
| | - Agnaldo de Souza Gonçalves
- Laboratório de Nanotecnologia e Energia Solar (LNES), University of Campinas (UNICAMP), 13083-970, Campinas, SP, Brazil
- Gleb Wataghin Institute of Physics, University of Campinas (UNICAMP), 13083-859 Campinas, SP, Brazil
| | - Jilian Nei de Freitas
- Center for Information Technology Renato Archer (CTI), 13069-901 Campinas, SP, Brazil
| | - Paulo E Marchezi
- Laboratório de Nanotecnologia e Energia Solar (LNES), University of Campinas (UNICAMP), 13083-970, Campinas, SP, Brazil
- Department of Engineering and Physics, Karlstad University, 651 88 Karlstad, Sweden
| | - Francineide Lopes de Araújo
- Laboratório de Nanotecnologia e Energia Solar (LNES), University of Campinas (UNICAMP), 13083-970, Campinas, SP, Brazil
| | - Hélio Cesar Nogueira Tolentino
- Brazilian Synchrotron Light Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), 13083-100 Campinas, SP, Brazil
| | - Michael F Toney
- Department of Chemical & Biological Engineering, and Renewable and Sustainable Energy Institute, University of Colorado, Boulder, Colorado 80309, United States
| | | | - Ana Flavia Nogueira
- Laboratório de Nanotecnologia e Energia Solar (LNES), University of Campinas (UNICAMP), 13083-970, Campinas, SP, Brazil
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9
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Yoon S, Seo M, Kim IS, Lee K, Woo K. Ultra-Stable and Highly Efficient White Light Emitting Diodes through CsPbBr 3 Perovskite Nanocrystals-Silica Composite Phosphor Functionalized with Surface Phenyl Molecules. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2206311. [PMID: 36461737 DOI: 10.1002/smll.202206311] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 11/15/2022] [Indexed: 06/17/2023]
Abstract
Poor stability of CsPbBr3 perovskite nanocrystals (NCs) to moisture/heat/light has significantly limited their application as a green phosphor, despite their outstanding luminescent properties. Here, a remarkably stable CsPbBr3 NCs-silica composite phosphor functionalized with surface phenyl molecules (CsPbBr3 -SiO2 Ph ) is synthesized by controlling low-temperature hydrolysis and condensation reaction of perhydropolysilazane in the presence of CsPbBr3 NCs followed by phenyl-functionalization. Through the process, CsPbBr3 NCs are confined in a compact silica matrix, which is impermeable to H2 O. The synthesis strategy is extended to a classical red quantum dot, CdZnSeS@ZnS NCs, to fabricate a white light emitting diode (WLED) consisting of CsPbBr3 -SiO2 Ph and CdZnSeS@ZnS-SiO2 Ph phosphor and silicone resin packaged on a commercial blue InGaN chip with luminous efficacy (LE) of 9.36 lm W-1 . The WLED undergoes enhancements in both green and red photoluminescence over time to achieve a highly efficient performance of 38.80 lm W-1 . More importantly, the WLED exhibits unprecedented operational stability of LE/LE0 = 94% after 101 h-operation at 20 mA (2.56 V). The ultra-high operational stability and efficient performance are mainly attributed to thermal curing and aging through which grain growth occurs as well as deactivation of defect states by permeated atmospheric O2 .
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Affiliation(s)
- Soyeon Yoon
- Nanophotonics Research Center, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Minjun Seo
- Nanophotonics Research Center, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
- Department of Chemistry, Korea University, Seoul, 02841, Republic of Korea
| | - In Soo Kim
- Nanophotonics Research Center, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
- KIST-SKKU Carbon-Neutral Research Center, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
| | - Kwangyeol Lee
- Department of Chemistry, Korea University, Seoul, 02841, Republic of Korea
| | - Kyoungja Woo
- Nanophotonics Research Center, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
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10
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Aihemaiti N, Jiang Y, Zhu Y, Peng S. Light-Induced Phase Segregation Evolution of All-Inorganic Mixed Halide Perovskites. J Phys Chem Lett 2023; 14:267-272. [PMID: 36595354 DOI: 10.1021/acs.jpclett.2c03419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Light-induced phase segregation in mixed halide perovskites is a major roadblock for commercialization of optoelectronics utilizing these materials. We investigate the phenomenon in a model material system consisting of only surfaces and the bulk of a single-crystalline-like microplate. We utilize environmental in-situ time-dependent photoluminescence spectroscopy to observe the bandgap evolution of phase segregation under illumination. This enables analysis of the evolution of the iodide-rich phase composition as a function of the environment (i.e., surface defects) and carrier concentration. Our study provides microscopic insights into the relationship among photocarrier generations, surface structural defects, and subsequently iodide ion migrations that result in the complex evolution of phase segregation. We elucidate the significance of surface defects with respect to the evolution of phase segregation, which may provide new perspectives for modulating ion migration by engineering of defects and carrier concentrations.
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Affiliation(s)
- Nuerbiya Aihemaiti
- Zhejiang University, Hangzhou, Zhejiang310027, China
- School of Engineering, Westlake University, Hangzhou, Zhejiang310030, China
| | - Yifan Jiang
- School of Engineering, Westlake University, Hangzhou, Zhejiang310030, China
| | - Yizhou Zhu
- Research Center for Industries of the Future, Westlake University, Hangzhou, Zhejiang310030, China
- School of Engineering, Westlake University, Hangzhou, Zhejiang310030, China
| | - Siying Peng
- Research Center for Industries of the Future, Westlake University, Hangzhou, Zhejiang310030, China
- School of Engineering, Westlake University, Hangzhou, Zhejiang310030, China
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11
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Romero-Pérez C, Zanetta A, Fernández-Delgado N, Herrera-Collado M, Hernández-Saz J, Molina SI, Caliò L, Calvo ME, Míguez H. Responsive Optical Materials Based on Ligand-Free Perovskite Quantum Dots Embedded in Mesoporous Scaffolds. ACS APPLIED MATERIALS & INTERFACES 2023; 15:1808-1816. [PMID: 36534002 DOI: 10.1021/acsami.2c16867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Herein we show that dispersing inorganic cesium lead bromide (CsPbBr3) perovskite quantum dots (QDs) in optical quality films, possessing an accessible and controlled pore size distribution, gives rise to fluorescent materials with a controlled and highly sensitive response to ambient changes. A scaffold-based synthesis approach is employed to obtain ligand-free QDs, whose pristine surface endows them with high sensitivity to the presence of different vapors in their vicinity. At the same time, the void network of the host offers a means to gradually expose the embedded QDs to such vapors. Under these conditions, the luminescent response of the QDs is mediated by the mesostructure of the matrix, which determines the rate at which vapor molecules will adsorb onto the pore walls and, eventually, condensate, filling the void space. With luminescence quantum yields as high as 60%, scaffold-supported ligand-free perovskite nanocrystals display intense photoemission signals over the whole process, as well as high photo- and chemical stability, which allows illuminating them for long periods of time and recovering the original response upon desorption of the condensed phase. The results herein presented open a new route to explore the application of perovskite QD-based materials in sensing.
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Affiliation(s)
- Carlos Romero-Pérez
- Instituto de Ciencias de Materiales de Sevilla (Consejo Superior de Investigaciones Científicas-Universidad de Sevilla), C/Américo Vespucio, 49, 41092Sevilla, Spain
| | - Andrea Zanetta
- Instituto de Ciencias de Materiales de Sevilla (Consejo Superior de Investigaciones Científicas-Universidad de Sevilla), C/Américo Vespucio, 49, 41092Sevilla, Spain
| | - Natalia Fernández-Delgado
- Department of Material Science, Metallurgical Engineering and Inorganic-Collado Chemistry IMEYMAT, Facultad de Ciencias, Universidad de Cádiz, Campus Río San Pedro, s/n, 11510Puerto Real, Cádiz, Spain
| | - Miriam Herrera-Collado
- Department of Material Science, Metallurgical Engineering and Inorganic-Collado Chemistry IMEYMAT, Facultad de Ciencias, Universidad de Cádiz, Campus Río San Pedro, s/n, 11510Puerto Real, Cádiz, Spain
| | - Jesús Hernández-Saz
- Departamento de Ingeniería y Ciencia de los Materiales y del Transporte, Universidad de Sevilla, Avda. Camino de los Descubrimientos s/n, 41092Sevilla, Spain
| | - Sergio Ignacio Molina
- Department of Material Science, Metallurgical Engineering and Inorganic-Collado Chemistry IMEYMAT, Facultad de Ciencias, Universidad de Cádiz, Campus Río San Pedro, s/n, 11510Puerto Real, Cádiz, Spain
| | - Laura Caliò
- Instituto de Ciencias de Materiales de Sevilla (Consejo Superior de Investigaciones Científicas-Universidad de Sevilla), C/Américo Vespucio, 49, 41092Sevilla, Spain
| | - Mauricio E Calvo
- Instituto de Ciencias de Materiales de Sevilla (Consejo Superior de Investigaciones Científicas-Universidad de Sevilla), C/Américo Vespucio, 49, 41092Sevilla, Spain
| | - Hernán Míguez
- Instituto de Ciencias de Materiales de Sevilla (Consejo Superior de Investigaciones Científicas-Universidad de Sevilla), C/Américo Vespucio, 49, 41092Sevilla, Spain
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12
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Galle MHJJ, Li J, Frantsuzov PA, Basché T, Scheblykin IG. Self-Healing Ability of Perovskites Observed via Photoluminescence Response on Nanoscale Local Forces and Mechanical Damage. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 10:e2204393. [PMID: 36453591 PMCID: PMC9811431 DOI: 10.1002/advs.202204393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/18/2022] [Indexed: 06/17/2023]
Abstract
The photoluminescence (PL) of metal halide perovskites can recover after light or current-induced degradation. This self-healing ability is tested by acting mechanically on MAPbI3 polycrystalline microcrystals by an atomic force microscope tip (applying force, scratching, and cutting) while monitoring the PL. Although strain and crystal damage induce strong PL quenching, the initial balance between radiative and nonradiative processes in the microcrystals is restored within a few minutes. The stepwise quenching-recovery cycles induced by the mechanical action is interpreted as a modulation of the PL blinking behavior. This study proposes that the dynamic equilibrium between active and inactive states of the metastable nonradiative recombination centers causing blinking is perturbed by strain. Reversible stochastic transformation of several nonradiative centers per microcrystal under application/release of the local stress can lead to the observed PL quenching and recovery. Fitting the experimental PL trajectories by a phenomenological model based on viscoelasticity provides a characteristic time of strain relaxation in MAPbI3 on the order of 10-100 s. The key role of metastable defect states in nonradiative losses and in the self-healing properties of perovskites is suggested.
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Affiliation(s)
- Marco H. J. J. Galle
- Department of ChemistryJohannes Gutenberg‐UniversityDuesbergweg 10‐1455128MainzGermany
| | - Jun Li
- Chemical Physics and NanoLundLund UniversityBox 124Lund22100Sweden
| | - Pavel A. Frantsuzov
- Voevodsky Institute of Chemical Kinetics and CombustionSiberian Branch of the Russian Academy of ScienceInstitutskaya 3Novosibirsk630090Russia
| | - Thomas Basché
- Department of ChemistryJohannes Gutenberg‐UniversityDuesbergweg 10‐1455128MainzGermany
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13
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Chen R, Guan W, Zhou W, Wang Z, Zhang G, Qin C, Hu J, Xiao L, Jia S. The role of atmospheric conditions in the nonradiative recombination in individual CH 3NH 3PbI 3 perovskite crystals. NANOSCALE ADVANCES 2022; 4:4838-4846. [PMID: 36381513 PMCID: PMC9642354 DOI: 10.1039/d2na00541g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Accepted: 10/10/2022] [Indexed: 06/16/2023]
Abstract
Organic-inorganic metal halide perovskites have been emerging as potential candidates for lightweight photovoltaic applications in space. However, fundamental physics concerning the effect of atmosphere on the radiative and nonradiative recombination in perovskites remains far from well understood. Here, we investigate the creation and annihilation of nonradiative recombination centers in individual CH3NH3PbI3 perovskite crystals by controlling the atmospheric conditions. We find that the photoluminescence (PL) of individual perovskite crystals can be quenched upon exposure from air to vacuum, while the subsequent PL enhancement in air shows a pressure dependence. Further analysis attributes the PL decline in vacuum to the activation of nonradiative trap sites, which is likely due to the lattice distortion caused by the variation of local strain on perovskites. With a gradual increase of the air pressure, the light-assisted chemisorption of oxygen on perovskite will passivate these nonradiative trap sites while simultaneously restoring the lattice imperfection, leading to PL enhancement. The present findings suggest that placing the perovskite in an environment with moderate oxygen content can protect the material from photophysical losses that can be pronounced under inert conditions.
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Affiliation(s)
- Ruiyun Chen
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University Taiyuan Shanxi 030006 China
- Collaborative Innovation Center of Extreme Optics, Shanxi University Taiyuan Shanxi 030006 China
| | - Wenling Guan
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University Taiyuan Shanxi 030006 China
- Collaborative Innovation Center of Extreme Optics, Shanxi University Taiyuan Shanxi 030006 China
| | - Wenjin Zhou
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University Taiyuan Shanxi 030006 China
- Collaborative Innovation Center of Extreme Optics, Shanxi University Taiyuan Shanxi 030006 China
| | - Zixin Wang
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University Taiyuan Shanxi 030006 China
- Collaborative Innovation Center of Extreme Optics, Shanxi University Taiyuan Shanxi 030006 China
| | - Guofeng Zhang
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University Taiyuan Shanxi 030006 China
- Collaborative Innovation Center of Extreme Optics, Shanxi University Taiyuan Shanxi 030006 China
| | - Chengbing Qin
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University Taiyuan Shanxi 030006 China
- Collaborative Innovation Center of Extreme Optics, Shanxi University Taiyuan Shanxi 030006 China
| | - Jianyong Hu
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University Taiyuan Shanxi 030006 China
- Collaborative Innovation Center of Extreme Optics, Shanxi University Taiyuan Shanxi 030006 China
| | - Liantuan Xiao
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University Taiyuan Shanxi 030006 China
- Collaborative Innovation Center of Extreme Optics, Shanxi University Taiyuan Shanxi 030006 China
| | - Suotang Jia
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University Taiyuan Shanxi 030006 China
- Collaborative Innovation Center of Extreme Optics, Shanxi University Taiyuan Shanxi 030006 China
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14
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Guan M, Li P, Wu Y, Liu X, Xu S, Zhang J. Highly efficient green emission Cs 4PbBr 6 quantum dots with stable water endurance. OPTICS LETTERS 2022; 47:5020-5023. [PMID: 36181176 DOI: 10.1364/ol.471088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 09/06/2022] [Indexed: 06/16/2023]
Abstract
To date, quantum dots (QDs) based on perovskite materials with high photoluminescence quantum yield (PLQY) and stability have rarely been reported. In this work, Cs4PbBr6 QDs glass ceramic with high PLQY and water stability is obtained, and the research results confirm that the strong green emission originates from the trapping of free excitons by internal Br vacancies. The rise of Br vacancies and the spontaneous growth of multi-morphology Cs4PbBr6 QDs under the influence of air humidity increase the PLQY to 89.62%. Compared with pure QDs, the Cs4PbBr6 QDs maintain high-intensity luminescence after being immersed in water for up to 150 days. In short, this paper puts forward a new, to the best of our knowledge, and valuable perspective for investigating the luminescence of Cs4PbBr6 QDs glass ceramic derived from related work.
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15
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Ceratti DR, Tenne R, Bartezzaghi A, Cremonesi L, Segev L, Kalchenko V, Oron D, Potenza MAC, Hodes G, Cahen D. Self-Healing and Light-Soaking in MAPbI 3 : The Effect of H 2 O. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2110239. [PMID: 35731235 DOI: 10.1002/adma.202110239] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 05/23/2022] [Indexed: 06/15/2023]
Abstract
The future of halide perovskites (HaPs) is beclouded by limited understanding of their long-term stability. While HaPs can be altered by radiation that induces multiple processes, they can also return to their original state by "self-healing." Here two-photon (2P) absorption is used to effect light-induced modifications within MAPbI3 single crystals. Then the changes in the photodamaged region are followed by measuring the photoluminescence, from 2P absorption with 2.5 orders of magnitude lower intensity than that used for photodamaging the MAPbI3 . After photodamage, two brightening and one darkening process are found, all of which recover but on different timescales. The first two are attributed to trap-filling (the fastest) and to proton-amine-related chemistry (the slowest), while photodamage is attributed to the lead-iodide sublattice. Surprisingly, while after 2P-irradiation of crystals that are stored in dry, inert ambient, photobrightening (or "light-soaking") occurs, mostly photodarkening is seen after photodamage in humid ambient, showing an important connection between the self-healing of a HaP and the presence of H2 O, for long-term steady-state illumination, practically no difference remains between samples kept in dry or humid environments. This result suggests that photobrightening requires a chemical-reservoir that is sensitive to the presence of H2 O, or possibly other proton-related, particularly amine, chemistry.
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Affiliation(s)
- Davide Raffaele Ceratti
- Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot, 7610001, Israel
- CNRS, UMR 9006, IPVF, Institut Photovoltaïque d'Ile-de-France, 18 Boulevard Thomas Gobert, Palaiseau, 91120, France
| | - Ron Tenne
- Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Andrea Bartezzaghi
- Institute of Mathematics, École Polytechnique Fédérale de Lausanne, Station 8, Lausanne, CH-1015, Switzerland
| | - Llorenç Cremonesi
- Department of Physics and CIMAINA, University of Milan, via Celoria, 16, Milan, 20133, Italy
| | - Lior Segev
- Department of Physics Core Facilities Lab Automation Software Unit, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Vyacheslav Kalchenko
- Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Dan Oron
- Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | | | - Gary Hodes
- Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - David Cahen
- Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot, 7610001, Israel
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16
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Kanwat A, Ghosh B, Ng SE, Rana PJS, Lekina Y, Hooper TJN, Yantara N, Kovalev M, Chaudhary B, Kajal P, Febriansyah B, Tan QY, Klein M, Shen ZX, Ager JW, Mhaisalkar SG, Mathews N. Reversible Photochromism in ⟨110⟩ Oriented Layered Halide Perovskite. ACS NANO 2022; 16:2942-2952. [PMID: 35040632 DOI: 10.1021/acsnano.1c10098] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Extending halide perovskites' optoelectronic properties to stimuli-responsive chromism enables switchable optoelectronics, information display, and smart window applications. Here, we demonstrate a band gap tunability (chromism) via crystal structure transformation from three-dimensional FAPbBr3 to a ⟨110⟩ oriented FAn+2PbnBr3n+2 structure using a mono-halide/cation composition (FA/Pb) tuning. Furthermore, we illustrate reversible photochromism in halide perovskite by modulating the intermediate n phase in the FAn+2PbnBr3n+2 structure, enabling greater control of the optical band gap and luminescence of a ⟨110⟩ oriented mono-halide/cation perovskite. Proton transfer reaction-mass spectroscopy carried out to precisely quantify the decomposition product reveals that the organic solvent in the film is a key contributor to the structural transformation and, therefore, the chromism in the ⟨110⟩ structure. These intermediate n phases (2 ≤ n ≤ ∞) stabilize in metastable states in the FAn+2PbnBr3n+2 system, which is accessible via strain or optical or thermal input. The structure reversibility in the ⟨110⟩ perovskite allowed us to demonstrate a class of photochromic sensors capable of self-adaptation to lighting.
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Affiliation(s)
- Anil Kanwat
- Energy Research Institute @ NTU (ERI@N), Nanyang Technological University, 50 Nanyang Drive, 637553, Singapore
| | - Biplab Ghosh
- Energy Research Institute @ NTU (ERI@N), Nanyang Technological University, 50 Nanyang Drive, 637553, Singapore
| | - Si En Ng
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
| | - Prem J S Rana
- Energy Research Institute @ NTU (ERI@N), Nanyang Technological University, 50 Nanyang Drive, 637553, Singapore
| | - Yulia Lekina
- Centre for Disruptive Photonic Technologies, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore
| | - Thomas J N Hooper
- Centre of High Field NMR Spectroscopy and Imaging, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
| | - Natalia Yantara
- Energy Research Institute @ NTU (ERI@N), Nanyang Technological University, 50 Nanyang Drive, 637553, Singapore
| | - Mikhail Kovalev
- Cambridge Centre for Advanced Research and Education (CARES), 1 Create Way, 138602, Singapore
| | - Bhumika Chaudhary
- Energy Research Institute @ NTU (ERI@N), Nanyang Technological University, 50 Nanyang Drive, 637553, Singapore
- Energy Research Institute @NTU (ERI@N), Interdisciplinary Graduate School, Nanyang Technological University, 50 Nanyang Drive, 637553, Singapore
| | - Priyanka Kajal
- Energy Research Institute @ NTU (ERI@N), Nanyang Technological University, 50 Nanyang Drive, 637553, Singapore
| | - Benny Febriansyah
- Energy Research Institute @ NTU (ERI@N), Nanyang Technological University, 50 Nanyang Drive, 637553, Singapore
- Berkeley Educational Alliance for Research in Singapore (BEARS), 1 Create Way, 138602, Singapore
| | - Qi Ying Tan
- Centre for Disruptive Photonic Technologies, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore
- Energy Research Institute @NTU (ERI@N), Interdisciplinary Graduate School, Nanyang Technological University, 50 Nanyang Drive, 637553, Singapore
| | - Maciej Klein
- Centre for Disruptive Photonic Technologies, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore
| | - Ze Xiang Shen
- Centre for Disruptive Photonic Technologies, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore
| | - Joel W Ager
- Berkeley Educational Alliance for Research in Singapore (BEARS), 1 Create Way, 138602, Singapore
- Materials Sciences Division Lawrence Berkeley National Laboratory, 225 Hearst Memorial Mining Building, Berkeley, California 94720-1760, United State of America
| | - Subodh G Mhaisalkar
- Energy Research Institute @ NTU (ERI@N), Nanyang Technological University, 50 Nanyang Drive, 637553, Singapore
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
| | - Nripan Mathews
- Energy Research Institute @ NTU (ERI@N), Nanyang Technological University, 50 Nanyang Drive, 637553, Singapore
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
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17
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Frohna K, Anaya M, Macpherson S, Sung J, Doherty TAS, Chiang YH, Winchester AJ, Orr KWP, Parker JE, Quinn PD, Dani KM, Rao A, Stranks SD. Nanoscale chemical heterogeneity dominates the optoelectronic response of alloyed perovskite solar cells. NATURE NANOTECHNOLOGY 2022; 17:190-196. [PMID: 34811554 DOI: 10.1038/s41565-021-01019-7] [Citation(s) in RCA: 46] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 09/29/2021] [Indexed: 05/24/2023]
Abstract
Halide perovskites perform remarkably in optoelectronic devices. However, this exceptional performance is striking given that perovskites exhibit deep charge-carrier traps and spatial compositional and structural heterogeneity, all of which should be detrimental to performance. Here, we resolve this long-standing paradox by providing a global visualization of the nanoscale chemical, structural and optoelectronic landscape in halide perovskite devices, made possible through the development of a new suite of correlative, multimodal microscopy measurements combining quantitative optical spectroscopic techniques and synchrotron nanoprobe measurements. We show that compositional disorder dominates the optoelectronic response over a weaker influence of nanoscale strain variations even of large magnitude. Nanoscale compositional gradients drive carrier funnelling onto local regions associated with low electronic disorder, drawing carrier recombination away from trap clusters associated with electronic disorder and leading to high local photoluminescence quantum efficiency. These measurements reveal a global picture of the competitive nanoscale landscape, which endows enhanced defect tolerance in devices through spatial chemical disorder that outcompetes both electronic and structural disorder.
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Affiliation(s)
- Kyle Frohna
- Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | - Miguel Anaya
- Cavendish Laboratory, University of Cambridge, Cambridge, UK.
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK.
| | | | - Jooyoung Sung
- Cavendish Laboratory, University of Cambridge, Cambridge, UK
- Department of Emerging Materials Science, DGIST, Daegu, Republic of Korea
| | | | - Yu-Hsien Chiang
- Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | - Andrew J Winchester
- Femtosecond Spectroscopy Unit, Okinawa Institute of Science and Technology Graduate University, Onna-son, Japan
| | - Kieran W P Orr
- Cavendish Laboratory, University of Cambridge, Cambridge, UK
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK
| | - Julia E Parker
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, UK
| | - Paul D Quinn
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, UK
| | - Keshav M Dani
- Femtosecond Spectroscopy Unit, Okinawa Institute of Science and Technology Graduate University, Onna-son, Japan
| | - Akshay Rao
- Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | - Samuel D Stranks
- Cavendish Laboratory, University of Cambridge, Cambridge, UK.
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK.
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18
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Kosar S, Winchester AJ, Doherty TAS, Macpherson S, Petoukhoff CE, Frohna K, Anaya M, Chan NS, Madéo J, Man MKL, Stranks SD, Dani KM. Unraveling the varied nature and roles of defects in hybrid halide perovskites with time-resolved photoemission electron microscopy. ENERGY & ENVIRONMENTAL SCIENCE 2021; 14:6320-6328. [PMID: 35003331 PMCID: PMC8658252 DOI: 10.1039/d1ee02055b] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Accepted: 09/01/2021] [Indexed: 06/14/2023]
Abstract
With rapidly growing photoconversion efficiencies, hybrid perovskite solar cells have emerged as promising contenders for next generation, low-cost photovoltaic technologies. Yet, the presence of nanoscale defect clusters, that form during the fabrication process, remains critical to overall device operation, including efficiency and long-term stability. To successfully deploy hybrid perovskites, we must understand the nature of the different types of defects, assess their potentially varied roles in device performance, and understand how they respond to passivation strategies. Here, by correlating photoemission and synchrotron-based scanning probe X-ray microscopies, we unveil three different types of defect clusters in state-of-the-art triple cation mixed halide perovskite thin films. Incorporating ultrafast time-resolution into our photoemission measurements, we show that defect clusters originating at grain boundaries are the most detrimental for photocarrier trapping, while lead iodide defect clusters are relatively benign. Hexagonal polytype defect clusters are only mildly detrimental individually, but can have a significant impact overall if abundant in occurrence. We also show that passivating defects with oxygen in the presence of light, a previously used approach to improve efficiency, has a varied impact on the different types of defects. Even with just mild oxygen treatment, the grain boundary defects are completely healed, while the lead iodide defects begin to show signs of chemical alteration. Our findings highlight the need for multi-pronged strategies tailored to selectively address the detrimental impact of the different defect types in hybrid perovskite solar cells.
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Affiliation(s)
- Sofiia Kosar
- Femtosecond Spectroscopy Unit, Okinawa Institute of Science and Technology Graduate University Onna Okinawa 904 0495 Japan
| | - Andrew J Winchester
- Femtosecond Spectroscopy Unit, Okinawa Institute of Science and Technology Graduate University Onna Okinawa 904 0495 Japan
| | - Tiarnan A S Doherty
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue Cambridge CB3 0HE UK
| | - Stuart Macpherson
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue Cambridge CB3 0HE UK
| | - Christopher E Petoukhoff
- Femtosecond Spectroscopy Unit, Okinawa Institute of Science and Technology Graduate University Onna Okinawa 904 0495 Japan
| | - Kyle Frohna
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue Cambridge CB3 0HE UK
| | - Miguel Anaya
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue Cambridge CB3 0HE UK
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive Cambridge CB3 0AS UK
| | - Nicholas S Chan
- Femtosecond Spectroscopy Unit, Okinawa Institute of Science and Technology Graduate University Onna Okinawa 904 0495 Japan
| | - Julien Madéo
- Femtosecond Spectroscopy Unit, Okinawa Institute of Science and Technology Graduate University Onna Okinawa 904 0495 Japan
| | - Michael K L Man
- Femtosecond Spectroscopy Unit, Okinawa Institute of Science and Technology Graduate University Onna Okinawa 904 0495 Japan
| | - Samuel D Stranks
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue Cambridge CB3 0HE UK
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive Cambridge CB3 0AS UK
| | - Keshav M Dani
- Femtosecond Spectroscopy Unit, Okinawa Institute of Science and Technology Graduate University Onna Okinawa 904 0495 Japan
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19
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Sansom HC, Buizza LRV, Zanella M, Gibbon JT, Pitcher MJ, Dyer MS, Manning TD, Dhanak VR, Herz LM, Snaith HJ, Claridge JB, Rosseinsky MJ. Chemical Control of the Dimensionality of the Octahedral Network of Solar Absorbers from the CuI-AgI-BiI 3 Phase Space by Synthesis of 3D CuAgBiI 5. Inorg Chem 2021; 60:18154-18167. [PMID: 34751565 PMCID: PMC8653216 DOI: 10.1021/acs.inorgchem.1c02773] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
A newly reported
compound, CuAgBiI5, is synthesized
as powder, crystals, and thin films. The structure consists of a 3D
octahedral Ag+/Bi3+ network as in spinel, but
occupancy of the tetrahedral interstitials by Cu+ differs
from those in spinel. The 3D octahedral network of CuAgBiI5 allows us to identify a relationship between octahedral site occupancy
(composition) and octahedral motif (structure) across the whole CuI–AgI–BiI3 phase field, giving the ability to chemically control structural
dimensionality. To investigate composition–structure–property
relationships, we compare the basic optoelectronic properties of CuAgBiI5 with those of Cu2AgBiI6 (which has
a 2D octahedral network) and reveal a surprisingly low sensitivity
to the dimensionality of the octahedral network. The absorption onset
of CuAgBiI5 (2.02 eV) barely changes compared with that
of Cu2AgBiI6 (2.06 eV) indicating no obvious
signs of an increase in charge confinement. Such behavior contrasts
with that for lead halide perovskites which show clear confinement
effects upon lowering dimensionality of the octahedral network from
3D to 2D. Changes in photoluminescence spectra and lifetimes between
the two compounds mostly derive from the difference in extrinsic defect
densities rather than intrinsic effects. While both materials show
good stability, bulk CuAgBiI5 powder samples are found
to be more sensitive to degradation under solar irradiation compared
to Cu2AgBiI6. We describe
a way to chemically control the octahedral network
of potentially useful photovoltaic solar absorbers in the CuI−AgI−BiI3 phase space by the synthesis of CuAgBiI5 with
a 3D octahedral network. We compare the photostability of CuAgBiI5 bulk samples and the absorption coefficient and photoluminescence
of solution processed thin films with those of Cu2AgBiI6, which has a 2D octahedral network. This helps to understand
structure−property relationships to direct further materials
optimization.
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Affiliation(s)
- Harry C Sansom
- Department of Chemistry, Materials Innovation Factory, University of Liverpool, 51 Oxford Street, Liverpool L7 3NY, U.K.,Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, U.K
| | - Leonardo R V Buizza
- Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, U.K
| | - Marco Zanella
- Department of Chemistry, Materials Innovation Factory, University of Liverpool, 51 Oxford Street, Liverpool L7 3NY, U.K
| | - James T Gibbon
- Stephenson Institute for Renewable Energy and Department of Physics, University of Liverpool, Oxford Street, Liverpool L69 7ZF, U.K
| | - Michael J Pitcher
- Department of Chemistry, Materials Innovation Factory, University of Liverpool, 51 Oxford Street, Liverpool L7 3NY, U.K
| | - Matthew S Dyer
- Department of Chemistry, Materials Innovation Factory, University of Liverpool, 51 Oxford Street, Liverpool L7 3NY, U.K
| | - Troy D Manning
- Department of Chemistry, Materials Innovation Factory, University of Liverpool, 51 Oxford Street, Liverpool L7 3NY, U.K
| | - Vinod R Dhanak
- Stephenson Institute for Renewable Energy and Department of Physics, University of Liverpool, Oxford Street, Liverpool L69 7ZF, U.K
| | - Laura M Herz
- Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, U.K
| | - Henry J Snaith
- Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, U.K
| | - John B Claridge
- Department of Chemistry, Materials Innovation Factory, University of Liverpool, 51 Oxford Street, Liverpool L7 3NY, U.K
| | - Matthew J Rosseinsky
- Department of Chemistry, Materials Innovation Factory, University of Liverpool, 51 Oxford Street, Liverpool L7 3NY, U.K
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20
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Chen X, Yu Y, Yang C, Yin J, Song X, Li J, Fei H. Fabrication of Robust and Porous Lead Chloride-Based Metal-Organic Frameworks toward a Selective and Sensitive Smart NH 3 Sensor. ACS APPLIED MATERIALS & INTERFACES 2021; 13:52765-52774. [PMID: 34702027 DOI: 10.1021/acsami.1c15276] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Organolead halide materials have shown promising optoelectronic properties that are suitable for light-emitting diodes (e.g., strong photoluminescence, narrow emission width, and high charge carrier mobility). However, the vast majority of them have no open porosity or open metal sites for host-guest interactions and are therefore not widely applicable in intrinsic fluorescent sensing of small molecules. Herein, we report a lead chloride-based metal-organic framework (MOF) with high porosity and stability and promising photoluminescent characteristics, performing as a sensitive, selective, and long-term stable fluorescence probe for NH3. For the first time, a homemade dynamic real-time photoluminescence monitoring system was developed, which showed that our haloplumbate-based MOF has an immediate response and an extremely low limit of detection (12 ppm) toward NH3. A variety of experimental characterization and theoretical calculations evidenced that the photoluminescence quenching was ascribed to the coordination between NH3 guests and exposed Pb2+ centers in MOFs. Moreover, a portable on-site smart NH3 detector was designed based on this haloplumbate-MOF using a 3D printer, and the quantitative recovery experiment demonstrated the effective detection of NH3 in the range of 15-150 ppm. This study opens a new pathway to design organolead halide-based MOFs to perform on-site chemical sensing of small molecules and shows their high potential to monitor safety concentrations of NH3 in different industrial sites.
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Affiliation(s)
- Xinfeng Chen
- Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, P. R. China
| | - Yuan Yu
- Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, P. R. China
| | - Chenxiao Yang
- Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, P. R. China
| | - Jinlin Yin
- Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, P. R. China
| | - Xueling Song
- Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, P. R. China
| | - Junjie Li
- Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, P. R. China
| | - Honghan Fei
- Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, P. R. China
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21
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Vijjapu MT, Surya SG, He JH, Salama KN. Highly Selective Self-Powered Organic-Inorganic Hybrid Heterojunction of a Halide Perovskite and InGaZnO NO 2 Sensor. ACS APPLIED MATERIALS & INTERFACES 2021; 13:40460-40470. [PMID: 34415137 DOI: 10.1021/acsami.1c06546] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Self-powered sensors can lead to disruptive advances in self-sustainable sensing systems that are imperative for evolving human lifestyles. For the first time, we demonstrate the fabrication of a heterojunction sensor using p-type hybrid-halide perovskites (CH3NH3PbBr3) and an n-type semiconducting metal oxide thin film [InGaZnO (IGZO)] for the detection of NO2 gas and power generation. Combining the excellent photoelectric properties of perovskites and the remarkable gas-sensing properties of IGZO at room temperature, the devised sensors generate open-circuit voltage and modulate according to the ambient NO2 concentration. The major challenge in devising self-powered gas sensors is to attain harvesting capability and selectivity simultaneously, owing to perovskites reactivity in the presence of oxygen and humidity. In this work, we developed a novel approach and fabricated a heterojunction sensor using parylene-c as an additional layer to curb the cross-sensitivity and to enhance the selectivity of the sensor. Even under the low concentrations of NO2, the developed sensor exhibits remarkable sensitivity, selectivity, and repeatability. The devices are sensitive and robust even under extreme humidity conditions (80% RH) and synthetic air. The devised sensor configuration is one way to eliminate the cross-sensitivity issue of the perovskite-based devices and serves as a reference for the development of self-powered sensors.
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Affiliation(s)
- Mani Teja Vijjapu
- Sensors Lab, Advanced Membranes and Porous Materials Center, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Sandeep G Surya
- Sensors Lab, Advanced Membranes and Porous Materials Center, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Jr-Hau He
- Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, China
| | - Khaled N Salama
- Sensors Lab, Advanced Membranes and Porous Materials Center, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
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22
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Kim D, Muckley ES, Creange N, Wan TH, Ann MH, Quattrocchi E, Vasudevan RK, Kim JH, Ciucci F, Ivanov IN, Kalinin SV, Ahmadi M. Exploring Transport Behavior in Hybrid Perovskites Solar Cells via Machine Learning Analysis of Environmental-Dependent Impedance Spectroscopy. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2002510. [PMID: 34155825 PMCID: PMC8336513 DOI: 10.1002/advs.202002510] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 04/14/2021] [Indexed: 06/13/2023]
Abstract
Hybrid organic-inorganic perovskites are one of the promising candidates for the next-generation semiconductors due to their superlative optoelectronic properties. However, one of the limiting factors for potential applications is their chemical and structural instability in different environments. Herein, the stability of (FAPbI3 )0.85 (MAPbBr3 )0.15 perovskite solar cell is explored in different atmospheres using impedance spectroscopy. An equivalent circuit model and distribution of relaxation times (DRTs) are used to effectively analyze impedance spectra. DRT is further analyzed via machine learning workflow based on the non-negative matrix factorization of reconstructed relaxation time spectra. This exploration provides the interplay of charge transport dynamics and recombination processes under environment stimuli and illumination. The results reveal that in the dark, oxygen atmosphere induces an increased hole concentration with less ionic character while ionic motion is dominant under ambient air. Under 1 Sun illumination, the environment-dependent impedance responses show a more striking effect compared with dark conditions. In this case, the increased transport resistance observed under oxygen atmosphere in equivalent circuit analysis arises due to interruption of photogenerated hole carriers. The results not only shed light on elucidating transport mechanisms of perovskite solar cells in different environments but also offer an effective interpretation of impedance responses.
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Affiliation(s)
- Dohyung Kim
- Joint Institute for Advanced Materials, Department of Materials Science and EngineeringUniversity of TennesseeKnoxvilleTN37996USA
| | - Eric S. Muckley
- The Center for Nanophase Materials SciencesOak Ridge National LaboratoryOak RidgeTN37831USA
| | - Nicole Creange
- Department of Materials Science and EngineeringNorth Carolina State UniversityRaleighNC27606USA
| | - Ting Hei Wan
- Department of Mechanical and Aerospace EngineeringThe Hong Kong University of Science and TechnologyHong Kong
| | - Myung Hyun Ann
- Department of Molecular Science and TechnologyAjou UniversitySuwon16499Republic of Korea
| | - Emanuele Quattrocchi
- Department of Mechanical and Aerospace EngineeringThe Hong Kong University of Science and TechnologyHong Kong
| | - Rama K. Vasudevan
- The Center for Nanophase Materials SciencesOak Ridge National LaboratoryOak RidgeTN37831USA
| | - Jong H. Kim
- Department of Molecular Science and TechnologyAjou UniversitySuwon16499Republic of Korea
| | - Francesco Ciucci
- Department of Mechanical and Aerospace EngineeringThe Hong Kong University of Science and TechnologyHong Kong
- Department of Chemical and Biomolecular EngineeringThe Hong Kong University of Science and TechnologyHong Kong
| | - Ilia N. Ivanov
- The Center for Nanophase Materials SciencesOak Ridge National LaboratoryOak RidgeTN37831USA
| | - Sergei V. Kalinin
- The Center for Nanophase Materials SciencesOak Ridge National LaboratoryOak RidgeTN37831USA
| | - Mahshid Ahmadi
- Joint Institute for Advanced Materials, Department of Materials Science and EngineeringUniversity of TennesseeKnoxvilleTN37996USA
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23
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Datta K, van Gorkom BT, Chen Z, Dyson MJ, van der Pol TPA, Meskers SCJ, Tao S, Bobbert PA, Wienk MM, Janssen RAJ. Effect of Light-Induced Halide Segregation on the Performance of Mixed-Halide Perovskite Solar Cells. ACS APPLIED ENERGY MATERIALS 2021; 4:6650-6658. [PMID: 34337343 PMCID: PMC8317152 DOI: 10.1021/acsaem.1c00707] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 06/30/2021] [Indexed: 05/09/2023]
Abstract
Light-induced halide segregation hampers obtaining stable wide-band-gap solar cells based on mixed iodide-bromide perovskites. So far, the effect of prolonged illumination on the performance of mixed-halide perovskite solar cells has not been studied in detail. It is often assumed that halide segregation leads to a loss of open-circuit voltage. By simultaneously recording changes in photoluminescence and solar cell performance under prolonged illumination, we demonstrate that cells instead deteriorate by a loss of short-circuit current density and that the open-circuit voltage is less affected. The concurrent red shift, increased lifetime, and higher quantum yield of photoluminescence point to the formation of relatively emissive iodide-rich domains under illumination. Kinetic Monte Carlo simulations provide an atomistic insight into their formation via exchange of bromide and iodide, mediated by halide vacancies. Localization of photogenerated charge carriers in low-energy iodide-rich domains and subsequent recombination cause reduced photocurrent and red-shifted photoluminescence. The loss in photovoltaic performance is diminished by partially replacing organic cations by cesium ions. Ultrasensitive photocurrent spectroscopy shows that cesium ions result in a lower density of sub-band-gap defects and suppress defect growth under illumination. These defects are expected to play a role in the development and recovery of light-induced compositional changes.
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Affiliation(s)
- Kunal Datta
- Molecular
Materials and Nanosystems & Institute for Complex Molecular Systems, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
| | - Bas T. van Gorkom
- Molecular
Materials and Nanosystems & Institute for Complex Molecular Systems, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
| | - Zehua Chen
- Materials
Simulation and Modelling, Department of Applied Physics, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
- Center
for Computational Energy Research, Department of Applied Physics, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Matthew J. Dyson
- Molecular
Materials and Nanosystems & Institute for Complex Molecular Systems, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
| | - Tom P. A. van der Pol
- Molecular
Materials and Nanosystems & Institute for Complex Molecular Systems, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
| | - Stefan C. J. Meskers
- Molecular
Materials and Nanosystems & Institute for Complex Molecular Systems, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
| | - Shuxia Tao
- Materials
Simulation and Modelling, Department of Applied Physics, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
- Center
for Computational Energy Research, Department of Applied Physics, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Peter A. Bobbert
- Molecular
Materials and Nanosystems & Institute for Complex Molecular Systems, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
- Center
for Computational Energy Research, Department of Applied Physics, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Martijn M. Wienk
- Molecular
Materials and Nanosystems & Institute for Complex Molecular Systems, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
| | - René A. J. Janssen
- Molecular
Materials and Nanosystems & Institute for Complex Molecular Systems, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
- Dutch
Institute for Fundamental Energy Research, 5612 AJ Eindhoven, The Netherlands
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24
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Photostable and Uniform CH 3NH 3PbI 3 Perovskite Film Prepared via Stoichiometric Modification and Solvent Engineering. NANOMATERIALS 2021; 11:nano11020405. [PMID: 33562608 PMCID: PMC7915270 DOI: 10.3390/nano11020405] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 01/22/2021] [Accepted: 01/26/2021] [Indexed: 11/17/2022]
Abstract
Solution-processed organometal halide perovskites (OMHPs) have been widely used in optoelectronic devices, and have exhibited brilliant performance. One of their generally recognized advantages is their easy fabrication procedure. However, such a procedure also brings uncertainty about the opto-electric properties of the final samples and devices, including morphology, stability, coverage ratio, and defect concentration. Normally, one needs to find a balanced condition, because there is a competitive relation between these parameters. In this work, we fabricated CH3NH3PbI3 films by carefully changing the ratio of the PbI2 to CH3NH3I, and found that the stoichiometric and solvent engineering not only determined the photoluminescence efficiency and defects in the materials, but also affected the photostability, morphology, and coverage ratio. Combining solvent engineering and the substitution of PbI2 by Pb(Ac)2, we obtained an optimized fabrication condition, providing uniform CH3NH3PbI3 films with both high photoluminescence efficiency and high photostability under either I-rich or Pb-rich conditions. These results provide an optimized fabrication procedure for CH3NH3PbI3 and other OMHP films, which is crucial for the performance of perovskite-based solar cells and light emitting devices.
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25
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De Giorgi ML, Milanese S, Klini A, Anni M. Environment-Induced Reversible Modulation of Optical and Electronic Properties of Lead Halide Perovskites and Possible Applications to Sensor Development: A Review. Molecules 2021; 26:705. [PMID: 33572957 PMCID: PMC7866427 DOI: 10.3390/molecules26030705] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 01/22/2021] [Accepted: 01/23/2021] [Indexed: 11/30/2022] Open
Abstract
Lead halide perovskites are currently widely investigated as active materials in photonic and optoelectronic devices. While the lack of long term stability actually limits their application to commercial devices, several experiments demonstrated that beyond the irreversible variation of the material properties due to degradation, several possibilities exist to reversibly modulate the perovskite characteristics by acting on the environmental conditions. These results clear the way to possible applications of lead halide perovskites to resistive and optical sensors. In this review we will describe the current state of the art of the comprehension of the environmental effects on the optical and electronic properties of lead halide perovskites, and of the exploitation of these results for the development of perovskite-based sensors.
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Affiliation(s)
- Maria Luisa De Giorgi
- Dipartimento di Matematica e Fisica “Ennio De Giorgi”, Università del Salento, Via per Arnesano, 73100 Lecce, Italy; (S.M.); (M.A.)
| | - Stefania Milanese
- Dipartimento di Matematica e Fisica “Ennio De Giorgi”, Università del Salento, Via per Arnesano, 73100 Lecce, Italy; (S.M.); (M.A.)
| | - Argyro Klini
- Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, P.O. Box 1385, Heraklion, 71110 Crete, Greece;
| | - Marco Anni
- Dipartimento di Matematica e Fisica “Ennio De Giorgi”, Università del Salento, Via per Arnesano, 73100 Lecce, Italy; (S.M.); (M.A.)
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26
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Du Y, Wan S, Pan Y, Xie M, Ding M, Hong D, Tian Y. Deactivation/Activation of Quenching Defects in CH 3NH 3PbI 3 Perovskite by Direct Electron Injection/Extraction. J Phys Chem Lett 2021; 12:773-780. [PMID: 33410686 DOI: 10.1021/acs.jpclett.0c03322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Organometal halide perovskites (OMHPs) have emerged as advisible materials for application in optoelectronic devices over the past decade. However, a variety of complex slow responses in OMHPs under an external electric field have been observed, and the mechanisms for these responses remain a topic of intense debate. In this work, with an external voltage applied to the CH3NH3PbI3 crystal, reversible photoluminescence (PL) enhancement and quenching behaviors respectively near the anode and the cathode were observed under wide-field fluorescence microscopy. Further experiments attribute the reversible PL enhancing responses to the electron injection effect increasing the radiative recombination, while PL quenching was attributed to be due to the electron extraction effect increasing the nonradiative recombination. The control of PL by external applied voltage indicates brilliant carrier mobility in the CH3NH3PbI3 crystal and also reminds us to focus on the effect of hole/electron injection on the materials which may limit the performance of perovskite-based optoelectronic devices.
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Affiliation(s)
- Yu Du
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Sushu Wan
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Yanghang Pan
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Mingyi Xie
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Mengning Ding
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Daocheng Hong
- Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng, Jiangsu 224051, China
| | - Yuxi Tian
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
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27
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Wei X, Zhang Y, Zheng T, Gao L, Jiang J, Zhao W, Liu H, Lu J, Ni Z. Competition between Oxygen Curing and Ion Migration in MAPbI 3 Induced by Irradiation Exposure. J Phys Chem Lett 2020; 11:8477-8482. [PMID: 32966084 DOI: 10.1021/acs.jpclett.0c02649] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Organometal halide perovskites (OHPs) have been considered as promising materials for light-emission devices. However, the factors influencing the luminescent property of OHPs are intricate. It is not only affected by the intrinsic crystalline quality but also depends on the surrounding environment. Here we demonstrate that the luminescence of CH3NH3PbI3 (MAPbI3) is governed by light-irradiation-induced oxygen curing and vacancy-mediated ion migration. The luminescence increases under continuous irradiation because of the curing of iodine vacancies (VI) by oxygen. While, it decreases with enhanced ion migration, which would induce excess trap states. The existence of VI is proved by low-temperature photoluminescence (PL) spectra, the hysteresis effect in J-V curves, and the excitation density dependence of the PL lifetime. Different oxygen environments and applied biases are employed to control the degree of oxygen curving and ion migration. These results provide a perception of the correlation of the complicated influencing factors affecting the luminescence of OHPs.
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Affiliation(s)
- Xin Wei
- School of Physics and Key Laboratory of MEMS of the Ministry of Education, Southeast University, Nanjing 211189, China
| | - Yong Zhang
- School of Physics and Key Laboratory of MEMS of the Ministry of Education, Southeast University, Nanjing 211189, China
| | - Ting Zheng
- School of Physics and Key Laboratory of MEMS of the Ministry of Education, Southeast University, Nanjing 211189, China
| | - Lei Gao
- School of Physics and Key Laboratory of MEMS of the Ministry of Education, Southeast University, Nanjing 211189, China
| | - Jie Jiang
- School of Physics and Key Laboratory of MEMS of the Ministry of Education, Southeast University, Nanjing 211189, China
| | - Weiwei Zhao
- School of Physics and Key Laboratory of MEMS of the Ministry of Education, Southeast University, Nanjing 211189, China
| | - Hongwei Liu
- Jiangsu Key Lab on Optoelectronic Technology, School of Physics and Technology, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, China
| | - Junpeng Lu
- School of Physics and Key Laboratory of MEMS of the Ministry of Education, Southeast University, Nanjing 211189, China
| | - Zhenhua Ni
- School of Physics and Key Laboratory of MEMS of the Ministry of Education, Southeast University, Nanjing 211189, China
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28
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Hong D, Zhao P, Du Y, Zhao C, Xia Y, Wei Z, Jin Z, Tian Y. Inhibition of Phase Segregation in Cesium Lead Mixed-Halide Perovskites by B-Site Doping. iScience 2020; 23:101415. [PMID: 32795914 PMCID: PMC7424214 DOI: 10.1016/j.isci.2020.101415] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 06/26/2020] [Accepted: 07/27/2020] [Indexed: 02/07/2023] Open
Abstract
The emergence of all-inorganic halide perovskites has shown great potential in photovoltaic and optoelectronic devices. However, the photo-induced phase segregation in lead mixed-halide perovskites has severely limited their application. Herein, by real-time monitoring the photoluminescence (PL) spectra of metal mixed-halide perovskites under light irradiation, we found that the photo-induced phase transition can be significantly inhibited by B-site doping. For pristine mixed-halide perovskites, an intermediate phase of CsPbBrxI3-x can only be stabilized under low excitation power. After introducing Sn2+ ions, such intermediate phase can be stabilized in nitrogen atmosphere under high excitation power and phase segregation can be started after the exposure in oxygen due to oxidization of Sn2+. Replacing Sn2+ by Mn2+ can further improve the intermediate phase's tolerance to oxygen proving that B-site doping in perovskites structure by Sn2+ or Mn2+ could effectively minimize the light-induced phase segregation and promote them to serve as promising candidates in photovoltaic and light-emitting devices. Phase segregation process of perovskite materials can be real-time monitored by PL Sn2+/Mn2+ doping can significantly improve the phase stability of CsPbIxBr3-x Mn2+ doping brings CsPbIxBr3-x higher tolerance to oxygen and moisture
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Affiliation(s)
- Daocheng Hong
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China; Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, China
| | - Peiyang Zhao
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Yu Du
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Cheng Zhao
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Yuren Xia
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Zhihong Wei
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Zhong Jin
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China.
| | - Yuxi Tian
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China.
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29
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Cao F, Yu D, Ma W, Xu X, Cai B, Yang YM, Liu S, He L, Ke Y, Lan S, Choy KL, Zeng H. Shining Emitter in a Stable Host: Design of Halide Perovskite Scintillators for X-ray Imaging from Commercial Concept. ACS NANO 2020; 14:5183-5193. [PMID: 31774652 DOI: 10.1021/acsnano.9b06114] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Halide perovskite (HP) nanocrystals (NCs) have recently shown great potential for X-ray detection and imaging. However, the practical application still has a long way to go with many technical requirements waiting to be fulfilled, including structure optimization, stability enhancement, and cost reduction. A design principle in this beginning stage is urgently needed but still lacking. Herein, with an "emitter-in-matrix" principle refined from commercial scintillators, CsPbBr3@Cs4PbBr6 with emissive CsPbBr3 NCs embedded inside a solid-state Cs4PbBr6 host is subjected to X-ray sensing and imaging. The Cs4PbBr6 matrix not only enhances the attenuation of X-rays but also dramatically improves the stability of CsPbBr3 NCs. A favorable optical design with the Cs4PbBr6 matrix being transparent to the emission from CsPbBr3 NCs enables efficient light output. As a result, stable and sensitive scintillation response to X-ray signals is demonstrated with superior linearity and ultrahigh time resolution. In order to show the huge potential for practical applications, X-ray imaging using a large-area film (360 mm × 240 mm) by the blade-coating technique is carried out to obtain a high-quality image of interior structures invisible to the human eye. In addition to the above advantages in optics, CsPbBr3@Cs4PbBr6 also enjoys facile solution synthesis with large scalability, excellent repeatability, and low cost.
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Affiliation(s)
- Fei Cao
- Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Dejian Yu
- Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Wenbo Ma
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, Zhejiang 310007, China
| | - Xiaobao Xu
- Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Bo Cai
- Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Yang Michael Yang
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, Zhejiang 310007, China
| | - Sinan Liu
- Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei Avenue, Nanjing 210094, China
| | - Lunhua He
- China Spallation Neutron Source, Dongguan Branch, Institute of High Energy Physics, Chinese Academy of Sciences, Dongguan 523803, China
| | - Yubin Ke
- China Spallation Neutron Source, Dongguan Branch, Institute of High Energy Physics, Chinese Academy of Sciences, Dongguan 523803, China
| | - Si Lan
- Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei Avenue, Nanjing 210094, China
| | - Kwang-Leong Choy
- Institute for Materials Discovery, University College London, Roberts Building, Malet Place, London WC1E 7JE, United Kingdom
| | - Haibo Zeng
- Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
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Gao W, Leng M, Hu Z, Li J, Li D, Liu H, Gao L, Niu G, Tang J. Reversible luminescent humidity chromism of organic-inorganic hybrid PEA 2MnBr 4 single crystals. Dalton Trans 2020; 49:5662-5668. [PMID: 32286602 DOI: 10.1039/d0dt00514b] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Organic-inorganic hybrids have drawn great attention for gas sensors due to their high sensitivity, good selectivity and acceptable stability at room temperature. There are two main approaches by which organic-inorganic hybrids convert gas information to electric or optical signals (vapochromism). Here, we have reported a new organic-inorganic hybrid PEA2MnBr4 for humidity detection by luminescent visible chromism. PEA2MnBr4 single crystals were grown by the solution method and determined by single-crystal X-ray diffraction. Luminescent humidity chromism was found on PEA2MnBr4 from green emission at the water-desorption state to pink emission at the water-adsorption state within 18 s at a relative humidity of 38% RH. This obviously visible chromism was further used to check the water content in toluene with a low detection limit between 0.02 and 0.05 vol%.
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Affiliation(s)
- Wanru Gao
- Sargent Joint Research Center, Wuhan National Laboratory for Optoelectronics (WNLO) and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, Hubei, People's Republic of China.
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31
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Choi S, Lee SY, Kim DY, Park HK, Ko MJ, Cho KH, Choi J. The synthesis and characterisation of the highly stable perovskite nano crystals and their application to ink-jet printed colour conversion layers. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2020.02.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Kirmani AR, Mansour AE, Yang C, Munir R, El-Zohry AM, Mohammed OF, Amassian A. Facile and noninvasive passivation, doping and chemical tuning of macroscopic hybrid perovskite crystals. PLoS One 2020; 15:e0230540. [PMID: 32182285 PMCID: PMC7077828 DOI: 10.1371/journal.pone.0230540] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 03/02/2020] [Indexed: 12/02/2022] Open
Abstract
Halide vacancies and associated metallic lead (Pb°) observed at the surface and deep inside macroscopic organolead trihalide perovskite crystals is removed through a facile and noninvasive treatment. Indeed, Br2 vapor is shown to passivate Br-vacancies and associated Pb° in the bulk of macroscopic crystals. Controlling the exposure time can markedly improve the overall stoichiometry for moderate exposures or introduce excessive bromide for long exposures, resulting in p-doping of the crystals. In the low dose passivation regime, Hall effect measurements reveal a ca. 3-fold increase in carrier mobility to ca. 15 cm2V-1s-1, while the p-doping increases the electrical conductivity ca. 10000-fold, including a 50-fold increase in carrier mobility to ca. 150 cm2V-1s-1. The ease of diffusion of Br2 vapor into macroscopic crystals is ascribed to the porosity allowed in rapidly grown crystals through aggregative processes of the colloidal sol during growth of films and macroscopic crystals. This process is believed to form significant growth defects, including open voids, which may be remnants of the escaping solvent at the solidification front. These results suggest that due to the sol-gel-like nature of the growth process, macroscopic perovskite crystals reported in this study are far from perfect and point to possible pathways to improving the optoelectronic properties of these materials. Nevertheless, the ability of the vapor-phase approach to access and tune the bulk chemistry and properties of nominally macroscopic perovskite crystals provides interesting new opportunities to precisely manipulate and functionalize the bulk properties of hybrid perovskite crystals in a noninvasive manner.
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Affiliation(s)
- Ahmad R. Kirmani
- Physical Sciences and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), KAUST Solar Center (KSC), Thuwal, Kingdom of Saudi Arabia
- * E-mail: (ARK); (AEM); (AA)
| | - Ahmed E. Mansour
- Physical Sciences and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), KAUST Solar Center (KSC), Thuwal, Kingdom of Saudi Arabia
- * E-mail: (ARK); (AEM); (AA)
| | - Chen Yang
- Physical Sciences and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), KAUST Solar Center (KSC), Thuwal, Kingdom of Saudi Arabia
| | - Rahim Munir
- Physical Sciences and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), KAUST Solar Center (KSC), Thuwal, Kingdom of Saudi Arabia
| | - Ahmed M. El-Zohry
- Physical Sciences and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), KAUST Solar Center (KSC), Thuwal, Kingdom of Saudi Arabia
| | - Omar F. Mohammed
- Physical Sciences and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), KAUST Solar Center (KSC), Thuwal, Kingdom of Saudi Arabia
| | - Aram Amassian
- Physical Sciences and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), KAUST Solar Center (KSC), Thuwal, Kingdom of Saudi Arabia
- * E-mail: (ARK); (AEM); (AA)
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Huang H, Hao M, Song Y, Dang S, Liu X, Dong Q. Dynamic Passivation in Perovskite Quantum Dots for Specific Ammonia Detection at Room Temperature. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1904462. [PMID: 31960583 DOI: 10.1002/smll.201904462] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 12/13/2019] [Indexed: 06/10/2023]
Abstract
Perovskite structured CsPbX3 (X = Cl, Br, or I) quantum dots (QDs) have attracted considerable interest in the past few years due to their excellent optoelectronic properties. Surface passivation is one of the main pathways to optimize the optoelectrical performance of perovskite QDs, in which the amino group plays an important role for the corresponding interaction between lead and halide. In this work, it is found that ammonia gas could dramatically increase photoluminescence of purified QDs and effectively passivate surface defects of perovskite QDs introduced during purification, which is a reversible process. This phenomenon makes perovskite QDs a kind of ideal candidate for detection of ammonia gas at room temperature. This QD film sensor displays specific recognition behavior toward ammonia gas due to its significant fluorescence enhancement, while depressed luminescence in case of other gases. The sensor, in turn-on mode, shows a wide detection range from 25 to 350 ppm with a limit of detection as low as 8.85 ppm. Meanwhile, a fast response time of ≈10 s is achieved, and the recovery time is ≈30 s. The fully reversible, high sensitivity and selectivity characteristics make CsPbBr3 QDs ideal active materials for room-temperature ammonia sensing.
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Affiliation(s)
- Hui Huang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, China
- College of Food Science and Engineering, Jilin University, Changchun, 130062, China
| | - Mingwei Hao
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, China
- College of Food Science and Engineering, Jilin University, Changchun, 130062, China
| | - Yilong Song
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Song Dang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Xiaoting Liu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Qingfeng Dong
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, China
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Zu F, Schultz T, Wolff CM, Shin D, Frohloff L, Neher D, Amsalem P, Koch N. Position-locking of volatile reaction products by atmosphere and capping layers slows down photodecomposition of methylammonium lead triiodide perovskite. RSC Adv 2020; 10:17534-17542. [PMID: 35515637 PMCID: PMC9053590 DOI: 10.1039/d0ra03572f] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 04/23/2020] [Indexed: 11/21/2022] Open
Abstract
The remarkable progress of metal halide perovskites in photovoltaics has led to the power conversion efficiency approaching 26%. However, practical applications of perovskite-based solar cells are challenged by the stability issues, of which the most critical one is photo-induced degradation. Bare CH3NH3PbI3 perovskite films are known to decompose rapidly, with methylammonium and iodine as volatile species and residual solid PbI2 and metallic Pb, under vacuum under white light illumination, on the timescale of minutes. We find, in agreement with previous work, that the degradation is non-uniform and proceeds predominantly from the surface, and that illumination under N2 and ambient air (relative humidity 20%) does not induce substantial degradation even after several hours. Yet, in all cases the release of iodine from the perovskite surface is directly identified by X-ray photoelectron spectroscopy. This goes in hand with a loss of organic cations and the formation of metallic Pb. When CH3NH3PbI3 films are covered with a few nm thick organic capping layer, either charge selective or non-selective, the rapid photodecomposition process under ultrahigh vacuum is reduced by more than one order of magnitude, and becomes similar in timescale to that under N2 or air. We conclude that the light-induced decomposition reaction of CH3NH3PbI3, leading to volatile methylammonium and iodine, is largely reversible as long as these products are restrained from leaving the surface. This is readily achieved by ambient atmospheric pressure, as well as a thin organic capping layer even under ultrahigh vacuum. In addition to explaining the impact of gas pressure on the stability of this perovskite, our results indicate that covalently “locking” the position of perovskite components at the surface or an interface should enhance the overall photostability. Gas pressure and capping layers under ultrahigh vacuum prevent methylammonium lead triiodide photo-degradation due to efficient back-reaction of volatile compounds.![]()
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Affiliation(s)
- Fengshuo Zu
- Institut für Physik & IRIS Adlershof
- Humboldt-Universität zu Berlin
- 12489 Berlin
- Germany
| | - Thorsten Schultz
- Institut für Physik & IRIS Adlershof
- Humboldt-Universität zu Berlin
- 12489 Berlin
- Germany
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH
| | - Christian M. Wolff
- Institut für Physik und Astronomie
- Universität Potsdam
- 14776 Potsdam
- Germany
| | - Dongguen Shin
- Institut für Physik & IRIS Adlershof
- Humboldt-Universität zu Berlin
- 12489 Berlin
- Germany
| | - Lennart Frohloff
- Institut für Physik & IRIS Adlershof
- Humboldt-Universität zu Berlin
- 12489 Berlin
- Germany
| | - Dieter Neher
- Institut für Physik und Astronomie
- Universität Potsdam
- 14776 Potsdam
- Germany
| | - Patrick Amsalem
- Institut für Physik & IRIS Adlershof
- Humboldt-Universität zu Berlin
- 12489 Berlin
- Germany
| | - Norbert Koch
- Institut für Physik & IRIS Adlershof
- Humboldt-Universität zu Berlin
- 12489 Berlin
- Germany
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH
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35
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He J, Fang WH, Long R. Unravelling the effects of oxidation state of interstitial iodine and oxygen passivation on charge trapping and recombination in CH 3NH 3PbI 3 perovskite: a time-domain ab initio study. Chem Sci 2019; 10:10079-10088. [PMID: 32055362 PMCID: PMC6991187 DOI: 10.1039/c9sc02353d] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 09/08/2019] [Indexed: 11/21/2022] Open
Abstract
Understanding nonradiative charge recombination mechanisms is a prerequisite for advancing perovskite solar cells. By performing time-domain density functional theory combined with nonadiabatic (NA) molecular dynamics simulations, we show that electron-hole recombination in perovskites strongly depends on the oxidation state of interstitial iodine and oxygen passivation. The simulations demonstrate that electron-hole recombination in CH3NH3PbI3 occurs within several nanoseconds, agreeing well with experiment. The negative interstitial iodine delays charge recombination by a factor of 1.3. The deceleration is attributed to the fact that interstitial iodine anion forms a chemical bond with its nearest lead atoms, eliminates the trap state, and decreases the NA electron-phonon coupling. The positive interstitial iodine attracts its neighbouring lattice iodine anions, resulting in the formation of an I-trimer and producing an electron trap. Electron trapping proceeds on a very fast timescale, tens of picoseconds, and captures the majority of free electrons available to directly recombine with free holes while inhibiting the recombination of free electrons and holes, delaying the recombination by a factor of 1.5. However, the positive interstitial iodine easily converts to a neutral iodine defect by capturing an electron, giving rise to a singly occupied state above the valence band maximum and acting as a hole trap. The photoexcitation valence band hole becomes trapped by the hole trap state very rapidly, followed by acceleration of recombination with the conduction band free electron by a factor of 1.6. Surprisingly, molecular oxygen interacting with interstitial iodine anion forms a stable IO3 -1 species, which inhibits ion migration, stabilizes perovskites, and suppresses the electron-hole recombination by a factor of 2.7. Our simulations reveal the microscopic effects of the oxidation state of interstitial iodine defects and oxygen passivation in perovskites, suggesting an effective way to improve perovskite photovoltaic and optoelectronic devices.
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Affiliation(s)
- Jinlu He
- College of Chemistry , Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education , Beijing Normal University , Beijing , 100875 , P. R. China .
| | - Wei-Hai Fang
- College of Chemistry , Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education , Beijing Normal University , Beijing , 100875 , P. R. China .
| | - Run Long
- College of Chemistry , Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education , Beijing Normal University , Beijing , 100875 , P. R. China .
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Chen H, Zhang M, Fu X, Fusco Z, Bo R, Xing B, Nguyen HT, Barugkin C, Zheng J, Lau CFJ, Huang S, Ho-Baillie AWY, Catchpole KR, Tricoli A. Light-activated inorganic CsPbBr 2I perovskite for room-temperature self-powered chemical sensing. Phys Chem Chem Phys 2019; 21:24187-24193. [PMID: 31658307 DOI: 10.1039/c9cp03059j] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Halide perovskite materials are excellent light harvesters that have generated enormous interest for photovoltaic technology and an increasing number of other optoelectronic applications. Very recently, their use for miniaturized chemical sensors has shown a promising room-temperature response. Here, we present some insights on the use of CsPbBr2I (CPBI) perovskites for self-powered room-temperature sensing of several environmentally and medically relevant compounds demonstrating rapid detection of down to concentrations of 1 ppm. Notably, the photocurrent of these self-powered CPBI-based devices increases under exposure to both reducing (e.g. acetone, propane) and oxidizing (e.g. NO2, O2) gas molecules and decreases rapidly upon reverting to an inert atmosphere. In situ photoluminescence (PL) analysis of the CPBI during exposure to oxidizing molecules reveals a strongly increased PL intensity and longer lifetime indicating a prevalent role of CPBI trap states in the sensing mechanism. These findings provide new insights for the engineering of perovskite-based materials for their future chemical sensing applications.
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Affiliation(s)
- Hongjun Chen
- Nanotechnology Research Laboratory, Research School of Electrical, Energy and Materials Engineering, College of Engineering and Computer Sciences, Australian National University, Canberra 2601, Australia.
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37
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Motti SG, Meggiolaro D, Martani S, Sorrentino R, Barker AJ, De Angelis F, Petrozza A. Defect Activity in Lead Halide Perovskites. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1901183. [PMID: 31423684 DOI: 10.1002/adma.201901183] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 05/29/2019] [Indexed: 05/24/2023]
Abstract
The presence of various types of chemical interactions in metal-halide perovskite semiconductors gives them a characteristic "soft" fluctuating structure, prone to a wide set of defects. Understanding of the nature of defects and their photochemistry is summarized, which leverages the cooperative action of density functional theory investigations and accurate experimental design. This knowledge is used to describe how defect activity determines the macroscopic properties of the material and related devices. Finally, a discussion of the open questions provides a path towards achieving an educated prediction of device operation, necessary to engineer reliable devices.
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Affiliation(s)
- Silvia G Motti
- Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia, via G. Pascoli 70/3, 20133, Milan, Italy
| | - Daniele Meggiolaro
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via dell' Elce di Sotto, 8, 06123, Perugia, Italy
- Computational Laboratory for Hybrid/OrganicPhotovoltaics (CLHYO), CNR-ISTM, Via Elce di Sotto 8, 06123, Perugia, Italy
- CompuNet, Istituto Italiano di Tecnologia, Via Morego 30, 16163, Genova, Italy
| | - Samuele Martani
- Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia, via G. Pascoli 70/3, 20133, Milan, Italy
- Dipartamento di Fisica, Politecnico di Milano, Piazza L. da Vinci, 32, 20133, Milan, Italy
| | - Roberto Sorrentino
- Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia, via G. Pascoli 70/3, 20133, Milan, Italy
- Dipartamento di Fisica, Politecnico di Milano, Piazza L. da Vinci, 32, 20133, Milan, Italy
| | - Alex J Barker
- Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia, via G. Pascoli 70/3, 20133, Milan, Italy
| | - Filippo De Angelis
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via dell' Elce di Sotto, 8, 06123, Perugia, Italy
| | - Annamaria Petrozza
- Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia, via G. Pascoli 70/3, 20133, Milan, Italy
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Kim YH, Kim JS, Lee TW. Strategies to Improve Luminescence Efficiency of Metal-Halide Perovskites and Light-Emitting Diodes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1804595. [PMID: 30556297 DOI: 10.1002/adma.201804595] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 09/17/2018] [Indexed: 05/21/2023]
Abstract
Metal-halide perovskites (MHPs) are well suited to be vivid natural color emitters due to their superior optical and electrical properties, such as narrow emission linewidths, easily and widely tunable emission wavelengths, low material cost, and high charge carrier mobility. Since the first development of MHP light-emitting diodes (PeLEDs) in 2014, many researchers have tried to understand the properties of MHP emitters and the limitations to luminescence efficiency (LE) of PeLEDs, and have devoted efforts to increase the LE of MHP emitters and PeLEDs. Within three and half years, PeLEDs have shown rapidly increased LE from external quantum efficiency ≈0.1% to ≈14.36%. Herein, the factors that limit the LE of PeLEDs are reviewed; the factors are characterized into the following groups: i) photophysical properties of MHP crystals, ii) morphological factors of MHP layers, and iii) problems caused by device architectures. Then, the strategies to overcome those luminescence-limiting factors in MHP emitters and PeLEDs are critically evaluated. Finally, research directions to further increase the LE of MHP emitters and the potential of MHPs as a core component in next-generation displays and solid-state lightings are suggested.
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Affiliation(s)
- Young-Hoon Kim
- Department of Materials Science and Engineering, Institute of Engineering Research, Research Institute of Advanced Materials, Nano Systems Institute (NSI), BK21 PLUS SNU Materials Division for Educating Creative Global Leaders, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Joo Sung Kim
- Department of Materials Science and Engineering, Institute of Engineering Research, Research Institute of Advanced Materials, Nano Systems Institute (NSI), BK21 PLUS SNU Materials Division for Educating Creative Global Leaders, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Tae-Woo Lee
- Department of Materials Science and Engineering, Institute of Engineering Research, Research Institute of Advanced Materials, Nano Systems Institute (NSI), BK21 PLUS SNU Materials Division for Educating Creative Global Leaders, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
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39
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Stranks SD, Hoye RLZ, Di D, Friend RH, Deschler F. The Physics of Light Emission in Halide Perovskite Devices. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1803336. [PMID: 30187974 DOI: 10.1002/adma.201803336] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 06/29/2018] [Indexed: 05/21/2023]
Abstract
Light emission is a critical property that must be maximized and controlled to reach the performance limits in optoelectronic devices such as photovoltaic solar cells and light-emitting diodes. Halide perovskites are an exciting family of materials for these applications owing to uniquely promising attributes that favor strong luminescence in device structures. Herein, the current understanding of the physics of light emission in state-of-the-art metal-halide perovskite devices is presented. Photon generation and management, and how these can be further exploited in device structures, are discussed. Key processes involved in photoluminescence and electroluminescence in devices as well as recent efforts to reduce nonradiative losses in neat films and interfaces are discussed. Finally, pathways toward reaching device efficiency limits and how the unique properties of perovskites provide a tremendous opportunity to significantly disrupt both the power generation and lighting industries are outlined.
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Affiliation(s)
| | - Robert L Z Hoye
- Cavendish Laboratory, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Dawei Di
- Cavendish Laboratory, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
| | | | - Felix Deschler
- Cavendish Laboratory, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
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40
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Andaji-Garmaroudi Z, Abdi-Jalebi M, Guo D, Macpherson S, Sadhanala A, Tennyson EM, Ruggeri E, Anaya M, Galkowski K, Shivanna R, Lohmann K, Frohna K, Mackowski S, Savenije TJ, Friend RH, Stranks SD. A Highly Emissive Surface Layer in Mixed-Halide Multication Perovskites. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1902374. [PMID: 31489713 DOI: 10.1002/adma.201902374] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Revised: 08/15/2019] [Indexed: 05/16/2023]
Abstract
Mixed-halide lead perovskites have attracted significant attention in the field of photovoltaics and other optoelectronic applications due to their promising bandgap tunability and device performance. Here, the changes in photoluminescence and photoconductance of solution-processed triple-cation mixed-halide (Cs0.06 MA0.15 FA0.79 )Pb(Br0.4 I0.6 )3 perovskite films (MA: methylammonium, FA: formamidinium) are studied under solar-equivalent illumination. It is found that the illumination leads to localized surface sites of iodide-rich perovskite intermixed with passivating PbI2 material. Time- and spectrally resolved photoluminescence measurements reveal that photoexcited charges efficiently transfer to the passivated iodide-rich perovskite surface layer, leading to high local carrier densities on these sites. The carriers on this surface layer therefore recombine with a high radiative efficiency, with the photoluminescence quantum efficiency of the film under solar excitation densities increasing from 3% to over 45%. At higher excitation densities, nonradiative Auger recombination starts to dominate due to the extremely high concentration of charges on the surface layer. This work reveals new insight into phase segregation of mixed-halide mixed-cation perovskites, as well as routes to highly luminescent films by controlling charge density and transfer in novel device structures.
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Affiliation(s)
| | | | - Dengyang Guo
- Department of Chemical Engineering, Delft University of Technology, van der Maasweg 9, 2629 HZ, Delft, The Netherlands
| | | | - Aditya Sadhanala
- Cavendish Laboratory, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
- Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford, OX1 3PU, UK
| | | | - Edoardo Ruggeri
- Cavendish Laboratory, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Miguel Anaya
- Cavendish Laboratory, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Krzysztof Galkowski
- Cavendish Laboratory, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, 5th Grudziądzka St., 87-100, Toruń, Poland
| | | | - Kilian Lohmann
- Cavendish Laboratory, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Kyle Frohna
- Cavendish Laboratory, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Sebastian Mackowski
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, 5th Grudziądzka St., 87-100, Toruń, Poland
| | - Tom J Savenije
- Department of Chemical Engineering, Delft University of Technology, van der Maasweg 9, 2629 HZ, Delft, The Netherlands
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41
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Yang T, Jeon NJ, Shin H, Shin SS, Kim YY, Seo J. Achieving Long-Term Operational Stability of Perovskite Solar Cells with a Stabilized Efficiency Exceeding 20% after 1000 h. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1900528. [PMID: 31380213 PMCID: PMC6661943 DOI: 10.1002/advs.201900528] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 04/19/2019] [Indexed: 06/01/2023]
Abstract
Perovskite solar cells (PSCs) with mesoporous TiO2 (mp-TiO2) as the electron transport material attain power conversion efficiencies (PCEs) above 22%; however, their poor long-term stability is a critical issue that must be resolved for commercialization. Herein, it is demonstrated that the long-term operational stability of mp-TiO2 based PSCs with PCE over 20% is achieved by isolating devices from oxygen and humidity. This achievement attributes to systematic understanding of the critical role of oxygen in the degradation of PSCs. PSCs exhibit fast degradation under controlled oxygen atmosphere and illumination, which is accompanied by iodine migration into the hole transport material (HTM). A diffusion barrier at the HTM/perovskite interface or encapsulation on top of the devices improves the stability against oxygen under light soaking. Notably, a mp-TiO2 based PSC with a solid encapsulation retains 20% efficiency after 1000 h of 1 sun (AM1.5G including UV) illumination in ambient air.
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Affiliation(s)
- Tae‐Youl Yang
- Division of Advanced MaterialsKorea Research Institute of Chemical Technology (KRICT)141 Gajeong‐Ro, Yuseong‐GuDaejeon34114Republic of Korea
| | - Nam Joong Jeon
- Division of Advanced MaterialsKorea Research Institute of Chemical Technology (KRICT)141 Gajeong‐Ro, Yuseong‐GuDaejeon34114Republic of Korea
| | - Hee‐Won Shin
- Department of Energy ScienceSungkyunkwan UniversitySuwon16419Republic of Korea
| | - Seong Sik Shin
- Division of Advanced MaterialsKorea Research Institute of Chemical Technology (KRICT)141 Gajeong‐Ro, Yuseong‐GuDaejeon34114Republic of Korea
| | - Young Yun Kim
- Division of Advanced MaterialsKorea Research Institute of Chemical Technology (KRICT)141 Gajeong‐Ro, Yuseong‐GuDaejeon34114Republic of Korea
| | - Jangwon Seo
- Division of Advanced MaterialsKorea Research Institute of Chemical Technology (KRICT)141 Gajeong‐Ro, Yuseong‐GuDaejeon34114Republic of Korea
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42
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Vicente JR, Rafiei Miandashti A, Sy Piecco KWE, Pyle JR, Kordesch ME, Chen J. Single-Particle Organolead Halide Perovskite Photoluminescence as a Probe for Surface Reaction Kinetics. ACS APPLIED MATERIALS & INTERFACES 2019; 11:18034-18043. [PMID: 31007015 DOI: 10.1021/acsami.9b03822] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Photoluminescence (PL) of organolead halide perovskites (OHPs) is sensitive to OHPs' surface conditions and is an effective way to report surface states. Literature has reported that at the ensemble level, the PL of photoexcited OHP nanorods declines under an inert nitrogen (N2) atmosphere and recovers under subsequent exposure to oxygen (O2). At the single-particle level, we observed that OHP nanorods photoblink at rates dependent on both the excitation intensity and the O2 concentration. Combining the two sets of information with the charge-trapping/detrapping mechanism, we are able to quantitatively evaluate the interaction between a single surface defect and a single O2 molecule using a new kinetic model. The model predicts that the photodarkening of OHP nanorods in the N2 atmosphere has a different mechanism than conventional PL quenching, which we call photo-knockout. This model provides fundamental insights into the interactions of molecular O2 with OHP materials and helps design a suitable OHP interface for a variety of applications in photovoltaics and optoelectronics.
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Affiliation(s)
- Juvinch R Vicente
- Department of Chemistry , University of the Philippines Visayas , Miagao, Iloilo 5023 , Philippines
| | | | - Kurt Waldo E Sy Piecco
- Department of Chemistry , University of the Philippines Visayas , Miagao, Iloilo 5023 , Philippines
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43
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Huang G, Huang Y, Xu W, Yao Q, Liu X, Ding C, Chen X. Cesium lead halide perovskite nanocrystals for ultraviolet and blue light blocking. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2018.12.028] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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44
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Quan LN, Rand BP, Friend RH, Mhaisalkar SG, Lee TW, Sargent EH. Perovskites for Next-Generation Optical Sources. Chem Rev 2019; 119:7444-7477. [PMID: 31021609 DOI: 10.1021/acs.chemrev.9b00107] [Citation(s) in RCA: 289] [Impact Index Per Article: 57.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Next-generation displays and lighting technologies require efficient optical sources that combine brightness, color purity, stability, substrate flexibility. Metal halide perovskites have potential use in a wide range of applications, for they possess excellent charge transport, bandgap tunability and, in the most promising recent optical source materials, intense and efficient luminescence. This review links metal halide perovskites' performance as efficient light emitters with their underlying materials electronic and photophysical attributes.
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Affiliation(s)
- Li Na Quan
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario M5S 3G4, Canada
| | - Barry P Rand
- Department of Electrical Engineering and Andlinger Center for Energy and the Environment, Princeton University, Princeton, New Jersey 08544, United States
| | - Richard H Friend
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom
| | - Subodh Gautam Mhaisalkar
- Energy Research Institute, Nanyang Technological University, Research Techno Plaza, X-Frontier Block, Level 5, 50 Nanyang Drive, 637553 Singapore, Singapore
| | - Tae-Woo Lee
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Edward H Sargent
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario M5S 3G4, Canada
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45
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Ahmadi M, Muckley ES, Ivanov IN, Lorenz M, Li X, Ovchinnikova O, Lukosi ED, Tisdale JT, Blount E, Kravchenko II, Kalinin SV, Hu B, Collins L. Environmental Gating and Galvanic Effects in Single Crystals of Organic-Inorganic Halide Perovskites. ACS APPLIED MATERIALS & INTERFACES 2019; 11:14722-14733. [PMID: 30938147 DOI: 10.1021/acsami.8b21112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Understanding the impact of environmental gaseous on the surface of organometal halide perovskites (OMHPs) couples to the electronic and ionic transport is critically important. Here, we explore the transport behavior and origins of the gas sensitivity in MAPbBr3 single crystals (SCs) devices using impedance spectroscopy and current relaxation measurements. Strong resistive response occurs when crystals are exposed to different environments. It was shown that SC response to the environment is extremely different at the surface as compared to the bulk due to the disorder surface chemistry. The nonlinear transport properties studied using ultrafast Kelvin probe force microscopy (G-KPFM) to unravel spatio-temporal charge dynamics at SC/electrode interface. The relaxation processes observed in pulse relaxation and G-KPFM measurements along with gas sensitivity of crystals suggest the presence of a triple-phase boundary between environment, electrode, and crystal. Results indicate that the environment is a nontrivial component in the operation of OMHP devices which is reminiscent of fuel cell systems. Furthermore, the triple-phase boundary can play a significant role in the transport properties of OMHPs due to the possibility of the redox processes coupled to the concentration of bulk ionic species. Although instrumental for understanding the device characteristics of perovskites, our studies suggest a new opportunity of coupling the redox chemistry of the Br2-Br- pair that defines the bulk ionic conductivity of MAPbBr3 with the redox chemistry of gaseous (or liquid) environment via a suitable electrocatalytic system to enable new class of energy storage devices and gas sensors.
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46
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Zhang X, Wang H, Hu Y, Pei Y, Wang S, Shi Z, Colvin VL, Wang S, Zhang Y, Yu WW. Strong Blue Emission from Sb 3+-Doped Super Small CsPbBr 3 Nanocrystals. J Phys Chem Lett 2019; 10:1750-1756. [PMID: 30932497 DOI: 10.1021/acs.jpclett.9b00790] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Colloidal lead halide perovskite nanocrystals (NCs) have high tunability in the visible light region and high photoluminescence quantum yields (PL QYs) for green and red emissions, but bright blue emission is still a challenge. Super small CsPbBr3 perovskite NCs emit blue light around 460 nm with a narrow peak width, and they do not have the problem of phase separation like their Cl-Br counterparts. However, the blue emission from super small CsPbBr3 NCs easily becomes green over time, and their PL QY is still low. The doping of Sb3+ ions successfully reduced the surface energy, improved the lattice energy, passivated the defect states below the band gap, eventually boosted the PL QY of blue emission to 73.8%, and resulted in better spectral stability even at elevated temperatures in solution (40-100 °C). Its CIE coordinates were (0.14, 0.06), which are close to the primary blue color (0.155, 0.070) according to the NTSC TV color standard.
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Affiliation(s)
- Xiangtong Zhang
- State Key Laboratory of Integrated Optoelectronics and College of Electronic Science and Engineering , Jilin University , Changchun 130012 , China
| | - Hua Wang
- Department of Chemistry and Physics , Louisiana State University , Shreveport , Louisiana 71115 , United States
| | - Yue Hu
- Department of Chemistry , Brown University , Providence , Rhode Island 02912 , United States
| | - Yixian Pei
- Institute for Micromanufacturing , Louisiana Tech University , Ruston , Louisiana 71270 , United States
| | - Shixun Wang
- State Key Laboratory of Integrated Optoelectronics and College of Electronic Science and Engineering , Jilin University , Changchun 130012 , China
| | - Zhifeng Shi
- Key Laboratory of Materials Physics of Ministry of Education, Department of Physics and Engineering , Zhengzhou University , Zhengzhou 450052 , China
| | - Vicki L Colvin
- Department of Chemistry , Brown University , Providence , Rhode Island 02912 , United States
| | - Shengnian Wang
- Institute for Micromanufacturing , Louisiana Tech University , Ruston , Louisiana 71270 , United States
| | - Yu Zhang
- State Key Laboratory of Integrated Optoelectronics and College of Electronic Science and Engineering , Jilin University , Changchun 130012 , China
| | - William W Yu
- State Key Laboratory of Integrated Optoelectronics and College of Electronic Science and Engineering , Jilin University , Changchun 130012 , China
- Department of Chemistry and Physics , Louisiana State University , Shreveport , Louisiana 71115 , United States
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He J, Fang WH, Long R, Prezhdo OV. Superoxide/Peroxide Chemistry Extends Charge Carriers’ Lifetime but Undermines Chemical Stability of CH3NH3PbI3 Exposed to Oxygen: Time-Domain ab Initio Analysis. J Am Chem Soc 2019; 141:5798-5807. [DOI: 10.1021/jacs.8b13392] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jinlu He
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education, Beijing Normal University, Beijing, 100875, People’s Republic of China
| | - Wei-Hai Fang
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education, Beijing Normal University, Beijing, 100875, People’s Republic of China
| | - Run Long
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education, Beijing Normal University, Beijing, 100875, People’s Republic of China
| | - Oleg V. Prezhdo
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
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48
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Galisteo-López JF, Calvo ME, Rojas TC, Míguez H. Mechanism of Photoluminescence Intermittency in Organic-Inorganic Perovskite Nanocrystals. ACS APPLIED MATERIALS & INTERFACES 2019; 11:6344-6349. [PMID: 30623640 DOI: 10.1021/acsami.8b17122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Lead halide perovskite nanocrystals have demonstrated their potential as active materials for optoelectronic applications over the past few years. Nevertheless, one issue that hampers their applicability has to do with the observation of photoluminescence intermittency, commonly referred to as "blinking", as in their inorganic counterparts. Such behavior, reported for structures well above the quantum confinement regime, has been discussed to be strongly related to the presence of charge carrier traps. In this work, we analyze the characteristics of this intermittency and explore the dependence on the surrounding atmosphere, showing evidence for the critical role played by the presence of oxygen. We discuss a possible mechanism in which a constant creation/annihilation of halide-related carrier traps takes place under light irradiation, with the dominant rate being determined by the atmosphere.
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Affiliation(s)
- Juan F Galisteo-López
- Instituto de Ciencia de Materiales de Sevilla, Consejo Superior de Investigaciones Científicas (CSIC)-Universidad de Sevilla , C/Américo Vespucio 49 , 41092 Sevilla , Spain
| | - Mauricio E Calvo
- Instituto de Ciencia de Materiales de Sevilla, Consejo Superior de Investigaciones Científicas (CSIC)-Universidad de Sevilla , C/Américo Vespucio 49 , 41092 Sevilla , Spain
| | - T Cristina Rojas
- Instituto de Ciencia de Materiales de Sevilla, Consejo Superior de Investigaciones Científicas (CSIC)-Universidad de Sevilla , C/Américo Vespucio 49 , 41092 Sevilla , Spain
| | - Hernán Míguez
- Instituto de Ciencia de Materiales de Sevilla, Consejo Superior de Investigaciones Científicas (CSIC)-Universidad de Sevilla , C/Américo Vespucio 49 , 41092 Sevilla , Spain
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49
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Wei Y, Cheng Z, Lin J. An overview on enhancing the stability of lead halide perovskite quantum dots and their applications in phosphor-converted LEDs. Chem Soc Rev 2019; 48:310-350. [PMID: 30465675 DOI: 10.1039/c8cs00740c] [Citation(s) in RCA: 367] [Impact Index Per Article: 73.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Beyond the unprecedented success achieved in photovoltaics (PVs), lead halide perovskites (LHPs) have shown great potential in other optoelectronic devices. Among them, nanometer-scale perovskite quantum dots (PQDs) with fascinating optical properties including high brightness, tunable emission wavelength, high color purity, and high defect tolerance have been regarded as promising alternative down-conversion materials in phosphor-converted light-emitting diodes (pc-LEDs) for lighting and next-generation of display technology. Despite the promising applications of perovskite materials in various fields, they have received strong criticism for the lack of stability. The poor stability has also attracted much attention. Within a few years, numerous strategies towards enhancing the stability have been developed. This review summarizes the mechanisms of intrinsic- and extrinsic-environment-induced decomposition of PQDs. Simultaneously, the strategies for improving the stability of PQDs are reviewed in detail, which can be classified into four types: (1) compositional engineering; (2) surface engineering; (3) matrix encapsulation; (4) device encapsulation. Finally, the challenges for applying PQDs in pc-LEDs are highlighted, and some possible solutions to improve the stability of PQDs together with suggestions for further improving the performance of pc-LEDs as well as the device lifetime are provided.
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Affiliation(s)
- Yi Wei
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.
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50
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Li Z, Hu Q, Tan Z, Yang Y, Leng M, Liu X, Ge C, Niu G, Tang J. Aqueous Synthesis of Lead Halide Perovskite Nanocrystals with High Water Stability and Bright Photoluminescence. ACS APPLIED MATERIALS & INTERFACES 2018; 10:43915-43922. [PMID: 30479125 DOI: 10.1021/acsami.8b16471] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Lead halide perovskite nanocrystals (NCs) have attracted intense attention because of their excellent optoelectronic properties. The ionic nature of halide perovskites makes them highly vulnerable to water. Encapsulation of perovskite NCs with inorganic or organic materials has been reported to enhance their stability; however, they often suffer from large aggregation size, low water solubility, and difficulty for further surface functionalization. Here, we report a facile aqueous process to synthesize water-soluble CsPbBr3/Cs4PbBr6 NCs with the assistance of a fluorocarbon agent (FCA), which features a novel mechanism of the perovskite crystallization at the oil/water interface and direct perovskite NCs/FCA self-assembly in an aqueous environment. The products exhibit a high absolute photoluminescence quantum yield (PLQY) of ∼80% in water with the PL lasting for weeks. Through successive ionic layer adsorption and reaction, BaSO4 was further applied to encapsulate the NCs, which greatly enhanced their stability in phosphate-buffered saline solutions. The high stability in water and saline solution, high PLQY, and tunable emission wavelength, together with the successful demonstration of brain tissue labeling and PL under X-ray excitation, make our perovskite NCs a promising choice for X-ray fluorescent biolabels.
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